Updated on 2026/07/31

写真a

 
NAKAMURA TAKASHI
 
Organization
School of Environment and Society Associate Professor
Title
Associate Professor
Homepage
http://nakalab.depe.titech.ac.jp/Lab/
External link

Degree

  • Doctor of Science ( 2000.3   Tokyo Institute of Technology )

  • Master of Science ( 1998.3   Tokyo Institute of Technology )

  • Bachelor of Science ( 1996.3   Rikkyo University )

Research Interests

  • 環境水理学，水防災・水域安全工学，高性能・マルチフィジックス計算流体力学

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Fluid engineering

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Hydroengineering

  • Environmental Science/Agriculture Science / Environmental load and risk assessment

  • Social Infrastructure (Civil Engineering, Architecture, Disaster Prevention) / Disaster prevention engineering

Education

  • Tokyo Institute of Technology   Interdisciplinary Science and Engineering   Energy Sciences

    1998.4 - 2000.3

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  • Tokyo Institute of Technology   Interdisciplinary Science and Engineering   Energy Sciences

    1996.4 - 1998.3

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    Country： Japan

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  • Rikkyo University   College of Science   Department of Physics

    1992.4 - 1996.3

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    Country： Japan

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Research History

  • Institute of Science Tokyo   Associate Professor

    2024.10

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    Country：Japan

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  • Tokyo Institute of Technology   School of Environment and Society   Associate Professor

    2016.4 - 2024.9

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  • The Open University of Japan   Faculty of Liberal Arts

    2015.4

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  • Tokyo Institute of Technology   Interdisciplinary Science and Engineering, Environmental Science and Engineering   Associate Professor

    2007.4 - 2016.3

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  • Tokyo Institute of Technology   Graduate School of Science and Engineering, Department of Civil Engineering

    2005.4 - 2007.3

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  • 大阪大学 レーザーエネルギー学研究センター・共同研究員 (東京工業大学助教授と兼担)

    2005.4 - 2007.3

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  • Tokyo Institute of Technology   Interdisciplinary Science and Engineering, Environmental Science and Engineering   Associate Professor (Lecturer)

    2002.4 - 2005.3

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  • 米国Lawrence Livermore National Laboratory派遣研究員(日米科学技術協力事業)

    2000.8 - 2000.9

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  • Utsunomiya University   Faculty of Engineering, Electrical and Electronic Engineering

    2000.4 - 2002.3

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  • 海洋科学技術センター   地球フロンティア研究システム モデル統合化領域   研究員

    2000.4 - 2001.3

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Professional Memberships

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Committee Memberships

  • SHIBUYA QWS Innovation協議会   大学連携企画ワーキンググループ委員  

    2023.4   

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    Committee type：Other

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  • 国土交通省   関東地方整備局 利根川水系 中川・綾瀬川河川整備計画フォローアップ委員会委員  

    2023.4 - 2025.3   

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    Committee type：Government

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  • 国土交通省   関東地方整備局 中川・綾瀬川有識者会議委員  

    2022.4 - 2024.3   

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    Committee type：Government

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  • 国土交通省   東北地方整備局 釜房ダム水質保全対策検討委員  

    2019.4   

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    Committee type：Government

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  • 東京都 目黒区   目黒川水質浄化対策評価委員会委員  

    2018.4 - 2020.3   

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    Committee type：Municipal

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  • 国土交通省   河川水辺の国勢調査アドバイザー  

    2017.4   

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    Committee type：Government

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  • 国土交通省   東北地方整備局 釜房ダム水質保全対策検討における技術指導委員  

    2011.4 - 2020.3   

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    Committee type：Government

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  • 国土交通省   関東地方整備局 関東地方河川技術懇談会委員（中川リバーカウンセラー）  

    2011.3   

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    Committee type：Government

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  • 日本流体力学会   第57回理論応用力学講演会 実行委員会 講演担当幹事  

    2008.4 - 2009.3   

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    Committee type：Academic society

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  • 日本流体力学会   学会誌編集委員  

    2006.4 - 2011.3   

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    Committee type：Academic society

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  • 日本機械学会   ＣＧの手法を活用した計算力学の可視化研究会委員  

    2002.4 - 2003.3   

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    Committee type：Academic society

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  • 日本計算工学会   学術委員（第24研究分科会）  

    2000.4 - 2004.3   

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    Committee type：Academic society

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Papers

  • Energy conversion and dynamics of an inclined thin flexible plate in oscillatory flows Reviewed

    Jiantao Zhang, Takashi Nakamura

    Journal of Fluid Mechanics   1032   2026.4

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    Publishing type：Research paper (scientific journal)   Publisher：Cambridge University Press (CUP)  

    The present work numerically investigates the dynamics of inclined thin flexible plates in oscillatory flows to assess the effects of bending stiffness, wave orbital excursion and inclination angle on plate deflection, reconfiguration, drag force and energy conversion. Four distinct structural response modes are identified, together with their transition conditions. An analytical expression for the lift coefficient of inclined rigid plates in the oscillatory flow is derived. By combining the drag and lift coefficients, we propose a modified Cauchy number, which quantitatively reveals the inclination effect from both geometric and mechanical perspectives. The dynamic behaviours of the plate deflection can be separated into two states. In the fully reconfigured state, a balance is achieved between elastic restoring force and hydrodynamics-driven force. Based on moment and energy balance, we derive a scaling law incorporating the modified Cauchy number, which accurately predicts the variation of tip deflection. In the passive movement state, the flexible plate moves passively along the flow, and its tip deflection saturates to the order of wave orbital excursions. A pronounced drag reduction is induced by the plate reconfiguration, following a $-1$ scaling law with a combined parameter, which is explained by the model of effective plate length. The energy conversion from fluid kinetic energy to structural elastic strain energy first increases and then decreases with increasing flexibility, yielding an optimal energy conversion efficiency. The modified Cauchy-number-based scaling law accurately predicts the averaged elastic energy growth and critical conditions for optimal energy conversion through a time scale competition mechanism.

    DOI： 10.1017/jfm.2026.11379

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  • A STUDY ON INFLUENCE OF CHANNEL-WIDTH ON DROWNING RISK IN A NARROW WATER CHANNEL BY USING A COUPLED HUMAN FLOW SIMULATION Reviewed

    Haruka MARUKI, Takashi NAKAMURA

    Japanese Journal of JSCE   82 ( 16 )   論文ID: 25-16198   2026

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejj.25-16198

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  • Validation of 3D multiphase pyroclastic dilute current model: effects of confinement on the flows Reviewed

    Shungo Tonoyama, Takashi Nakamura, Gert Lube

    Bulletin of Volcanology   87 ( 3 )   2025.2

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s00445-025-01799-z

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    Other Link： https://link.springer.com/article/10.1007/s00445-025-01799-z/fulltext.html

  • IMPACT FORCE OF SNOW AVALANCHE ON A MOVABLE HUMAN BODY Reviewed

    I-Chen TSAI, Takashi NAKAMURA

    Journal of JSCE   13 ( 2 )   Article No. 24-16111   2025

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/journalofjsce.24-16111

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  • Dynamics of an inverted flag in an oscillatory flow

    Jiantao Zhang, Takashi Nakamura

    The 21st International Conference on Flow Dynamics, Sendai, Japan, 18-20 Nov.   GS1-17   2024.11

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    Publishing type：Research paper (international conference proceedings)  

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  • Propulsive performance of a heaving and pitching foil with large amplitudes in unsteady ground effect Reviewed

    Jian-Tao Zhang, Takashi Nakamura

    Fluid Dynamics Research   56 ( 4 )   045503 - 045503   2024.7

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    Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    Abstract

    To reveal the effect of ground on the force behavior, propulsion performance, and vortex dynamics of a flapping foil, we numerically study a flapping foil actuated by combined heaving and pitching motions with large amplitudes near a solid ground surface. The instantaneous forces in both streamwise and cross-stream directions undergo a sudden drop during upstroke in close ground effect. The time-averaged thrust is enhanced by the ground but varies non-monotonically with ground distance at high foil oscillating frequencies. Three force regimes are identified in lift production, giving rise to two equilibrium altitudes of zero lift, one stable and another unstable. Moreover, we propose a simple scaling law model by a path-length-based Strouhal number and ground effect for thrust and power performance of a large-amplitude flapping foil. The results of the model are consistent with numerical results and previous experimental studies. The vortex dynamics in the wake structure are largely affected by ground proximity; in particular, the formed vortex pairs and their orientations are sensitive to their initial relative positions. Different sources and mechanisms of satellite vortex formation are then discussed. The ground exerts little effect on the phase angles that optimize the propulsive efficiency. This study is expected to provide new insights into the development and maneuvering of flapping foil-based propulsive systems.

    DOI： 10.1088/1873-7005/ad628a

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    Other Link： https://iopscience.iop.org/article/10.1088/1873-7005/ad628a/pdf

  • Dynamics of a wall-mounted flexible plate in oscillatory flows Reviewed

    Jian-tao Zhang, Takashi Nakamura

    Physics of Fluids   36 ( 7 )   2024.7

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    Publishing type：Research paper (scientific journal)   Publisher：AIP Publishing  

    The present work numerically studies the dynamics of a two-dimensional wall-mounted flexible plate in an oscillatory flow, aiming to assess the effect of structure bending stiffness and wave orbital excursion on the plate deflection, reconfiguration, and drag reduction. Different modes of dynamic responding behaviors are identified such as quasi-linear, linear, non-linear, and irregular modes with varied studying parameters. The plates of the quasi-linear mode show a fully reconfigured state in oscillatory flow with different wave excursions, of which the tip deflection and effective length for the reconfiguration effect are analyzed and the scaling laws are derived based on force and energy balances. With decreasing elasticity, the plates through linear motion show the limitation of reconfiguration and move passively and rigorously following along oscillatory flow with zero phase lag, wherein the tip deflections saturate to the same order as wave excursions and the effective lengths change slightly where the bending stiffness effect is insignificant. A critical Cauchy number, Cacri, which separates the fully reconfigured state and passive movement state, is proposed using the scaling arguments based on the time scales of flow oscillation frequency and time for plates to reach full reconfiguration for different wave orbital excursions. To account for the non-linear motion effect on drag reduction, we derive a scaling model based on the spatially and temporally averaged relative velocity and the prediction performs well. Furthermore, a rich phenomenology of fluid–structure interaction including phase lag, fluid loading distribution, internal elastic energy, vibration resonance, and vortex structure is presented.

    DOI： 10.1063/5.0214147

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  • Rapid calculation for avalanche maps by GPGPU-based snow avalanche model Reviewed

    I-Chen Tsai, Takashi Nakamura

    Cold Regions Science and Technology   223   104220 - 104220   2024.7

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.coldregions.2024.104220

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  • INJURY RISK ASSESSMENT OF ACCIDENT OF FALLING TO WATER BY USING A COUPLED HUMAN-FLOW SIMULATION MODEL Reviewed

    Hiroyuki SHINOHARA, Takashi NAKAMURA

    Japanese Journal of JSCE   80 ( 16 )   論文ID: 23-16064   2024

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejj.23-16064

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  • Waterborne Disease Risk Assessment and Mapping for a Floating Village by Combining 3D Hydraulic Simulation and Quantitative Microbial Risk Assessment Reviewed

    Takashi Nakamura, Hideto Fujii, Toru Watanabe, Sarann Ly, Sambo Lun, Yoichi Fujihara, Keisuke Hoshikawa, Kazuhiko Miyanaga, Chihiro Yoshimura

    Water   15 ( 23 )   4199 - 4199   2023.12

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    Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

    Spatiotemporal changes in waterborne disease risk were evaluated for the Chhnok Tru floating village in the Tonle Sap Lake by combining a hydraulic simulation and quantitative microbial risk assessment (QMRA). First, a three-dimensional (3D) hydraulic simulation was performed, and the transport of Escherichia coli (E. coli) was simulated. Prior to the simulation, by coupling satellite imagery analysis using the normalized difference water index (NDWI) and a sounding survey using an acoustic Doppler current profiler (ADCP), a new digital elevation model was generated for the complex channel network with high resolution. The results of the 3D hydraulic simulation revealed the flow regime and nonuniform pathogen distribution in the floating village. QMRA was performed for the village using the E. coli distribution calculated by the 3D hydraulic model. Subsequently, the disease risk in the village was visualized through an effective and easy-to-understand disease risk map. To demonstrate the usefulness of the hydraulic-simulation-based disease risk map, the map was used to quantitatively compare simple policies by evaluating their reduction in disease risk.

    DOI： 10.3390/w15234199

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  • Dynamics of vertically clamped flexible filament in wavy flow

    Jiantao Zhang, Takashi Nakamura

    The 20th International Conference on Flow Dynamics, Sendai, Japan, 6-8 Nov.   OS21-22   2023.11

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    Publishing type：Research paper (international conference proceedings)  

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  • Numerical simulation of single vertically clamped flexible filament in wavy flow

    Jiantao Zhang, Takashi Nakamura

    The 33rd International Symposium on Transport Phenomena, Kumamoto, Japan, 24-27 Sep.   Article No. 133   2023.9

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  • A new simulation model of snow avalanche accelerated by GPGPU technique

    I-Chen TSAI, Takashi Nakamura

    IACM 22nd Computational Fluid Conference (CFC 2023), Cannes, France, 25-28 Apr.   MS3-02A   2023.4

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  • Numerical simulation of air entrainment by three dimensional pyroclastic flow model

    Shungo Tonoyama, Takashi Nakamura

    EGU General Assembly 2022, Vienna, Austria, 23-27 May.   Article No. EGU22-9587   2022.5

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  • Force performance and vortex structure of flapping foil in unsteady ground effect at moderate Reynolds number

    Jiantao Zhang, Takashi Nakamura

    The 15th World Congress on Computational Mechanics (WCCM-XV), Yokohama, Japan, 31 July–5 Aug.   1965   2022

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  • BASIC STUDY ON DROWNING RISK AT A LOW-HEAD DAM BY USING A COUPLED HUMAN FLOW SIMULATION Reviewed

    Hiroki SEKIYA, Takashi NAKAMURA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   78 ( 2 )   I_211 - I_216   2022

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.78.2_i_211

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  • Characteristics of the Annual Maximum and Minimum Water Temperatures in Tonle Sap Lake, Cambodia from 2000 to 2019 Reviewed

    Yoichi Fujihara, Koki Okuyama, Keisuke Hoshikawa, Hideto Fujii, Takashi Nakamura, Sambo Lun, Sokly Siev

    Remote Sensing   13 ( 19 )   3972 - 3972   2021.10

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    Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

    The Tonle Sap Lake contains unique hydrological environments and ecosystems. Although water temperature is an important consideration in lake management, information on the water temperature of the lake is limited. Thus, we investigated the characteristics of the daytime water temperatures of the Tonle Sap Lake from 2000 to 2019 using MOD11A1, a Moderate Resolution Imaging Spectroradiometers (MODIS) product. Moreover, the relationship between water temperature fluctuations and hydrological–meteorological conditions was analyzed. The maximum and minimum daytime water temperatures were recorded in May (30.7 °C) and January (24.6 °C), respectively, each a month after the maximum and minimum air temperatures were recorded. The annual maximum, average, and minimum water levels showed a downward trend (−0.14, −0.08, and −0.01 m/y, respectively). The annual maximum water temperature increased at a rate of 0.17 °C/decade, whereas the annual minimum water temperature decreased at a rate of 0.91 °C/decade. The annual maximum daytime water temperature had a strong negative correlation with water level change (flood pulse) and a weaker correlation with air temperature. The annual minimum daytime water temperature presented the strongest positive correlation with water level change (flood pulse) in the previous year. However, there was no correlation between the annual minimum daytime water temperature and air temperature. These results indicate that water temperature in the Tonle Sap Lake is mainly affected by water level fluctuations, which are mainly driven by flood pulses.

    DOI： 10.3390/rs13193972

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  • Large-scale experiment to assess the collision impact force from a tsunami wave on a drifting castaway Reviewed

    Tetsunori Inoue, Kazumasa Oguri, Hisami Suga, Kojiro Suzuki, Zdenek Prochazka, Takashi Nakamura, Akane Kurisu

    PLOS ONE   16 ( 2 )   e0247436 - e0247436   2021.2

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    Publishing type：Research paper (scientific journal)   Publisher：Public Library of Science (PLoS)  

    Although most fatalities in tsunami-related disasters are conjectured to be a result of drowning, injury risk owing to collision with other floating debris or fixed buildings has not been studied sufficiently. In this study, the impact force corresponding to the collision of a concrete block and drifting test body in a tsunami wave was experimentally investigated, and the injury risk was evaluated in terms of different biomechanical indexes; specifically, maximum acceleration, head injury criterion, and impact force. The injury risk indicated by the considered indexes was reasonably low. It was noted that if a healthy adult collided with a concrete wall under a velocity of 2.5 m s-1 and wave height of 0.59 m, the adult would likely not be critically injured. However, a similar collision impact poses considerable risk to infants and children, as well as the more sensitive regions of the adult body. Moreover, in the case of large tsunamis, such as that in the 2011 Great East Japan Earthquake, a drifting person may be at considerable risk for injuries. The collision impact occurring on the tip of a surge flow is notably significantly larger than that on a bore flow. This is because a surge flow, which arrives at the concrete block earlier than a bore flow, forms a certain water layer along the concrete wall and that layer acts as a cushion for any body drifting on the bore flow, indicating the importance of such a buffering effect. These findings can provide practical guidance regarding the formulation of effective tsunami-protection measures.

    DOI： 10.1371/journal.pone.0247436

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  • Health risk assessment of a floating village based on three-dimensional hydraulic simulation

    T. Nakamura, T. Watanabe, A. Kuwagaki, K. Miyanaga, C. Peng, H. Fujii, S. Ly, S. Lun, Y. Fujihara, K. Hoshikawa, C. Yoshimura

    The 6th International Symposium on Conservation and Management of Tropical Lakes in conjunction with The 3rd International Conference on Tropical Limnology (TROPLIMNO III), Phnom Penh, Cambodia, 25-26 Nov.   Article No. 16   2021

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  • Lake water temperature characteristics and long-term variations in water temperature in the Tonle Sap Lake

    Yoichi Fujihara, Keisuke Hoshikawa, Hideto Fujii, Takashi Nakamura, Sokly Siev, Sambo Lun

    The 13th AUN/SEED-Net Regional Conference on Chemical Engineering 2020 (RCChE-2020) Jointly held with The 5th International Symposium on Conservation and Management of Tropical Lakes, Phnom Penh, Cambodia, 4-5 Feb.   173 - 176   2021

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    Publishing type：Research paper (international conference proceedings)  

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  • BASIC STUDY ON OBSTRUCTION OF TRANSPORT OF A WATER ACCIDENT SUFFERER WITH A WEIR-LIKE STRUCTURE IN A CHANNEL Reviewed

    Shungo TONOYAMA, Takashi NAKAMURA, Tetsunori INOUE

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   76 ( 2 )   I_919 - I_924   2020

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.76.2_i_919

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  • Characterization of total suspended solid dynamics in a large shallow lake using long‐term daily satellite images Reviewed

    Keisuke Hoshikawa, Yoichi Fujihara, Sokly Siev, Seiya Arai, Takashi Nakamura, Hideto Fujii, Ty Sok, Chihiro Yoshimura

    Hydrological Processes   33 ( 21 )   2745 - 2758   2019.8

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    Publishing type：Research paper (scientific journal)   Publisher：Wiley  

    Abstract

    Large, shallow‐water lakes located on floodplains play an important role in creating highly productive ecosystems and are prone to high concentrations of suspended solids due to sediment resuspension. In this study, the aim was to determine the dominant processes governing the total suspended solid (TSS) concentration at the water surface in Tonle Sap Lake, Cambodia, which is a large, shallow‐water lake. Satellite remotely sensed daily reflectance data from 2003 to 2017 were used. Seasonal changes in TSS concentration indicated that bottom sediment resuspension during dry seasons was mostly caused by wind and the TSS concentration was closely correlated with the water depth of the lake. The TSS concentration during flood periods was controlled by both wind and inflow currents from the Tonle Sap River. Additionally, we confirmed that surface/subsurface flow with a low TSS concentration from forests on the floodplain lowered the TSS concentration year round, except during August and September. This fact implied that the floodplain forest area decrease may increase the lake TSS concentration. An analysis of the long‐term changes in TSS indicated that a decrease in the water level during flood periods resulted in the high TSS concentrations observed during the subsequent dry periods. Therefore, climate change and water resource development, which are likely to cause water level reductions in the Mekong River during flood periods, may increase the TSS concentration in Tonle Sap Lake, particularly during the dry season.

    DOI： 10.1002/hyp.13525

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    Other Link： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/hyp.13525

  • Efficacy of a GPGPU-Acceleration to Inundation Flow Simulation in Tonle Sap Lake in Cambodia Reviewed

    Takashi Nakamura, Shun Murakami, Lun Sambo, Hideto Fujii

    Engineering Journal   23 ( 1 )   151 - 169   2019.1

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    Publishing type：Research paper (scientific journal)   Publisher：Faculty of Engineering, Chulalongkorn University  

    DOI： 10.4186/ej.2019.23.1.151

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  • Development of a coupled human fluid numerical model for the evaluation of tsunami drowning hazards Reviewed

    Daiki AJIMA, Takashi NAKAMURA, Tatsuto ARAKI, Tetsunori INOUE, Akane KURISU

    Journal of Biomechanical Science and Engineering   14 ( 1 )   18 - 00321   2019

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Mechanical Engineers  

    DOI： 10.1299/jbse.18-00321

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  • Hydraulic simulation of Escherichia coli distribution in Chhnok Tru floating village, the Tonle Sap Great Lake

    T. Nakamura, K. Takemura, H. Fujii, S. Ly, S. Lun, S. Heng, S. Siev, Y. Fujihara, K. Hoshikawa, C. Peng, Y. Tanji, K. Miyanaga, T. Watanabe, C. Yoshimura

    The 4th international symposium on conservation and management of tropical lakes, Phnom Penh, Cambodia, 16-19 Sep.   42 - 45   2019

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  • Characterization of total suspended solid dynamics in a large shallow lake using long-term daily satellite images

    Keisuke Hoshikawa, Yoichi Fujihara, Sokly Siev, Seiya Arai, Takashi Nakamura, Hideto Fujii, Ty Sok, Chihiro Yoshimura

    The 4th international symposium on conservation and management of tropical lakes, Phnom Penh, Cambodia, 16-19 Sep.   144 - 147   2019

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  • Long-term variation of surface water temperature in the Tonle Sap Lake using MODIS LST data

    Yoichi Fujihara, Keisuke Hoshikawa, Hideto Fujii, Takashi Nakamura, Sarann Ly

    The 4th international symposium on conservation and management of tropical lakes, Phnom Penh, Cambodia, 16-19 Sep.   214   2019

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  • Escherichia coli transport simulation in the Tonle Sap Great Lake using a two-dimensional hydraulic model accelerated by GPGPU

    A. Kuwagaki, T. Nakamura, H. Fujii, S. Ly, S. Lun, S. Heng, S. Siev, Y. Fujihara, K. Hoshikawa, C. Peng, Y. Tanji, K. Miyanaga, T. Watanabe, C. Yoshimura

    The 4th international symposium on conservation and management of tropical lakes, Phnom Penh, Cambodia, 16-19 Sep.   218   2019

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  • Validation of a coupled human fluid model using PIV experiment and application to the entrapment accident in water channel

    The 7th Asian Pacific Congress, on, Computational Mechanics (APCOM, Taipei, Taiwa, Dec

    323   2019

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    Publishing type：Research paper (international conference proceedings)  

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  • Development of a new numerical model coupling flow and human motion for assessment of snow avalanche impact on a human body

    Naoto Sakaki, Takashi Nakamura

    The 7th Asian Pacific Congress on Computational Mechanics (APCOM), Taipei, Taiwan, 17-20 Dec.   324   2019

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    Publishing type：Research paper (international conference proceedings)  

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  • Potential impacts of climate change on inundation area in Tonle Sap Lake, Cambodia

    Sokly Siev, Ichiro Yoneda, Takashi Nakamura, Ratino Sith, Sarann Ly, Hideto Fujii, Chihiro Yoshimura

    The 4th international symposium on conservation and management of tropical lakes, Phnom Penh, Cambodia, 16-19 Sep.   6 - 9   2019

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  • SPATIAL VARIATION OF WITHIN-DAY AND BETWEEN-DAY CHLOROPHYLL A DYNAMICS DURING SUMMER IN GUANTING RESERVOIR, BEIJING, CHINA Reviewed

    W. W. Jiang, J. S. Yu, Z. J. Li, T. Nakamura, F. Q. Yu, J. Y. Zhang

    Applied Ecology and Environmental Research   17 ( 3 )   5765 - 5780   2019

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    Publishing type：Research paper (scientific journal)   Publisher：ALOKI Ltd  

    DOI： 10.15666/aeer/1703_57655780

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  • Flow Observation of the Tonle Sap River by ADCP and Cause of Decrease in Observation Accuracy Reviewed

    Hideto Fujii, Takashi Nakamura, Sarann Ly, Sambo Lun, Sokchhay Heng, Yoichi Fujihara, Keisuke Hoshikawa, Masato Nakata

    Journal of Rainwater Catchment Systems   24 ( 2 )   17 - 25   2019

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    Publishing type：Research paper (scientific journal)   Publisher：Journal of Rainwater Catchment Systems  

    DOI： 10.7132/jrcsa.24_2_17

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  • Flood mapping under an extreme event in a large shallow lake influenced by flood pulse in Southeast Asia

    Sokly Siev, Vannak Ann, Takashi Nakamura, Hideto Fujii, Chihiro Yoshimura

    The 6th Environmental Technology and Management Conference (ETMC) in conjunction with The 12th AUN/SEED-Net Regional Conference on Environmental Engineering (RC EnvE) 2019, Sanur, Bali, Indonesia, 5-7 Nov.   2019

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  • DISCUSSING THE PROPRIETIES OF THE CONVENTIONAL ASSESSMENT OF FLOOD CONTROL INVESTMENT FOCUSED ON THE UNDEVELOPED AREA Reviewed

    YUKI MARUYAMA, TAKASHI NAKAMURA, BOUYA O. AHMED, CHERIF O. AHMED, KIYOKAZU UJIIE, MITSUTERU IRIE

    WIT Transactions on The Built Environment   1   153 - 166   2018.5

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    Publishing type：Research paper (international conference proceedings)   Publisher：WIT Press  

    DOI： 10.2495/friar180151

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  • Discussing the proprieties of conventional assessment to the flood control investment focused on the undeveloped area

    Yuki Maruyama, Takashi Nakamura, Bouya O. Ahmed, Cherif O. Ahmed, Kiyokazu Ujiie, Mitsuteru Irie

    The 6th International Conference on Flood and Urban Water Management, A Coruña, Spain, 23-25 May.   153 - 166   2018

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  • NUMERICAL STUDY ON ORGANIC SEDIMENT DEPOSITION IN NOMI RIVER ESTUARY, TOKYO Reviewed

    Shin MIURA, Takashi NAKAMURA, Tadaharu ISHIKAWA, Tatsuki KOTAJIMA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   74 ( 5 )   I_475 - I_480   2018

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    DOI： 10.2208/jscejhe.74.5_i_475

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  • Development of the DRowning hUman Model (DRUM) toward evaluation of performance of lifejackets in tsunami

    D. Ajima, T. Araki, T. Nakamura

    The 18th Asia Simulation Conference (AsiaSim 2018), Kyoto, Japan, 27-29 Oct.   466 - 476   2018

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  • Application of TITech-WARM to a 3D numerical analysis of water current in Chhnok Tru’s floating village

    T. Nakamura, H. Fujii, S. Ly, S. Lun, S. Heng, Y. Fujihara, K. Hoshikawa, K. Takemura, S. Arai

    The 11th Regional Conference on Environmental Engineering 2018 (RCEnvE‐2018) Jointly held with The 3rd International Symposium on Conservation and Management of Tropical Lakes, Phnom Penh, Cambodia, 27-28 Sep.   307 - 310   2018

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  • Discharge measurement of the Tonle Sap Lake and River by ADCP

    Hideto Fujii, Takashi Nakamura, Sarann Ly, Sambo Lun, Sokchhay Heng, Yoichi Fujihara, Keisuke Hoshikawa

    The 11th Regional Conference on Environmental Engineering 2018 (RCEnvE‐2018) Jointly held with The 3rd International Symposium on Conservation and Management of Tropical Lakes, Phnom Penh, Cambodia, 27-28 Sep.   295 - 298   2018

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  • FIELD OBSERVATIONS ON ACCUMULATION OF ORGANIC SLUDGE AND GENERATION OF SCUM IN NOMI-RIVER FLOWING THROUGH HIGHLY URBANIZED AREA OF TOKYO Reviewed

    Shin MIURA, Tadaharu ISHIKAWA, Takashi NAKAMURA, Tatsuki KOTAJIMA, Takumi MAEDA, Hirofumi KANEKO

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   74 ( 4 )   I_523 - I_528   2018

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    DOI： 10.2208/jscejhe.74.i_523

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  • Efficacy of GPGPU-acceleration to a 2D inundation flow simulation of Tonle Sap Lake in Cambodia

    T. Nakamura, S. Murakami, H. Fujii, L. Sambo, K. Takemura, S. Arai

    The 2nd International Symposium on Conservation and Management of Tropical Lakes, Siem Reap, Cambodia, 24-26 Aug.   168 - 169   2017

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  • DEVELOPMENT OF A THREE-DIMENSIONAL FLUID-HUMAN COUPLED NUMERICAL SIMULATION MODEL TOWARD A DROWNING PREVENTION Reviewed

    Takashi NAKAMURA, Daiki AJIMA, Taketoshi AIZAWA, Tetsunori INOUE

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   73 ( 4 )   I_601 - I_606   2017

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    DOI： 10.2208/jscejhe.73.i_601

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  • Satellite image analysis to detect a spatial distribution of turbidity in the Tonle Sap Lake using MODIS data

    K. Takemura, S. Arai, T. Nakamura

    The 2nd International Symposium on Conservation and Management of Tropical Lakes, Siem Reap, Cambodia, 24-26 Aug.   163 - 164   2017

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  • A new high accuracy and low memory consumption CIP interpolation on Soroban mesh

    Daiki Ajima, Takashi Nakamura

    the 12th World Congress on Computational Mechanics, Seoul, Korea, 24-29 July.   Article No. MS702C-4   2016

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  • A new interpolation method with high accuracy and low memory consumption for CIP-Soroban method Reviewed

    NAKAMURA Takashi, AJIMA Daiki

    Transactions of the Japan Society for Computational Engineering and Science   2016   20160014 - 20160014   2016

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    Language：Japanese   Publisher：JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE  

    A new directional-splitting CIP interpolation with the multi-dimensional Soroban mesh is proposed based on the Type-F CIP interpolation technique with a structured rectangular computational mesh. The proposed scheme does not need to treat the time evolution of the high-order derivatives and largely reduce the memory consumption. The proposed scheme applies to solutions of the two and three dimensional advection equation. The numerical results show that the proposed interpolation retains the third-order accuracy and realize the rapid solution with low memory consumption.

    DOI： 10.11421/jsces.2016.20160014

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  • THREE-DIMENSIONAL NUMERICAL FLOW ANALYSIS OF SALINE INTRUSION IN NORTHEASTERN SHALLOW AREA OF LAKE OGAWARA Reviewed

    Takashi NAKAMURA, Koji IWATA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   72 ( 4 )   I_697 - I_702   2016

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.72.i_697

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  • Temporal and spatial distribution of salinity and hypoxia in a tidal river Reviewed

    Xiaofei Xu, Xiaojuan Wang, Fengxia Liu, Wei Wei, Zhiyi Li, Zhijun Liu, Takashi Nakamura, Tadaharu Ishikawa

    Huanjing Kexue Xuebao/Acta Scientiae Circumstantiae   35 ( 9 )   2900 - 2909   2015.9

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    Language：Chinese   Publishing type：Research paper (scientific journal)   Publisher：Science Press  

    DOI： 10.13671/j.hjkxxb.2015.0453

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  • THE FLOOD SIMULATION OF THE 2011 OFF THE PACIFIC COAST OF TOHOKU EARTHQUAKE TSUNAMI IN URBAN AREA OF KAMAISHI BAY Reviewed

    Ryosuke AKOH, Tadaharu ISHIKAWA, Shunichi HATAKEYAMA, Takashi KOJIMA, Mahito TOMARU, Takashi NAKAMURA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   71 ( 1 )   16 - 27   2015

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.71.16

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  • Numerical Study on the Process of Sedimentation in Joumine Reservoir, Tunisia Reviewed

    ISHIKAWA Tadaharu, WANG Mingyang, IRIE Mitsuteru, NAKAMURA Takashi

    Damu Kogaku   25 ( 1 )   29 - 37   2015

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    Language：Japanese   Publisher：Japan Society of Dam Engineers  

    Sedimentation process in the Joumine Reservoir located in the semi-arid area of North Tunisia was studied by numerical simulation. The major sediment component flowing into the reservoir is fine silt of about 5 μm in diameter, and the high SS water carried by floods generates high-turbid current along the reservoir bed. A vertical 2-D flow model was developed to simulate the high-turbid flow, and the model performance was verified by comparison with the data obtained from field measurements. The model reproduced the longitudinal profile of bed deformation for 23 years after the dam construction fairly well. The computation showed the unsteady sedimentation process, in which the small and middle scale floods result in sediment deposition in the upstream reach while the self-accelerating gravity current caused by the large scale floods picks up and transports the sediment downstream to the deepest area near the dam body.

    DOI： 10.11315/jsde.25.29

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    Other Link： https://jlc.jst.go.jp/DN/JLC/20008165693?from=CiNii

  • Impact of the riverbed subsidence due to the 2011 earthquake off the Pacific coast of Tohoku on the estuary circulation in the Kitakami River

    Takashi Nakamura, Takashi Kojima, Tadaharu Ishikawa

    The 7th International Symposium on Environmental Hydraulics, Singapore, Singapore, 6-8 Jan.   403 - 406   2014

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  • NUMERICAL ERRORS OF TSUNAMI SIMULATION BY FINITE VOLUME METHODS ON UNSTRUCTURED TRIANGULAR MESH AND EFFICIENCY OF ADAPTIVE MESH REFINEMENT TECHNIQUE Reviewed

    Xinxiang ZENG, Takashi NAKAMURA, Ryosuke AKOH, Tadaharu ISHIKAWA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   70 ( 4 )   I_793 - I_798   2014

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    DOI： 10.2208/jscejhe.70.i_793

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  • Three-dimensional numerical flow analysis of the inclined saline plume intruding into lake Ogawara Reviewed

    Takashi Nakamura, Norihito Shinkai, Tadaharu Ishikawa

    Advances in River Engineering   19   567 - 572   2013

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    DOI： 10.11532/river.19.0_567

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  • Numerical investigation of the impact of riverbed subsicende due to the 2011 off the Pacific coast of Tohoku earthquake on estuary circulation in the Kitakami River Reviewed

    Takashi Nakamura, Takashi Kikuchi, Tadaharu Ishikawa

    Advances in River Engineering   19   537 - 542   2013

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    DOI： 10.11532/river.19.0_537

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  • THREE-DIMENSIONAL MODELING OF HYDRODYNAMICS AND DISSOLVED OXYGEN TRANSPORT IN TONE RIVER ESTUARY Reviewed

    Xiaofei XU, Tadaharu ISHIKAWA, Takashi NAKAMURA

    Journal of JSCE   1 ( 1 )   194 - 213   2013

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/journalofjsce.1.1_194

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  • METEOROLOGICAL DATA GENERATION FOR NUMERICAL SIMULATION OF STRATIFIED FLOW IN THE JOUMINE RESERVOIR, TUNISIA Reviewed

    Kakeru TAKAHIRA, Takashi NAKAMURA, Tadaharu ISHIKAWA, Mitsuteru IRIE, Jamila TARHOUNI, Takashi KOJIMA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   69 ( 4 )   I_835 - I_840   2013

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.69.i_835

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  • ON THE EFFICIENCY OF GPGPU ACCELERATION OF NUMERICAL SOLUTIONS OF WIND WAVE ENERGY BALANCE EQUATION AND APPLICATION TO KASUMIGAURA LAKE Reviewed

    Fuyuhiko ISHII, Tadaharu ISHIKAWA, Takashi NAKAMURA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   69 ( 4 )   I_781 - I_786   2013

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.69.i_781

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  • DEVELOPMENT OF A NEW 3D NUMERICAL WATER RESERVOIR FLOW MODEL ^|^quot;TITECH-WARM^|^quot; AND APPLICATION TO THE KAMAFUSA LAKE Reviewed

    Takashi NAKAMURA, Masahito TODA, Kazuto WATANABE, Tadaharu ISHIKAWA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   69 ( 4 )   I_775 - I_780   2013

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.69.i_775

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  • ON THE EFFICIENCY OF GPGPU ACCELERATION OF TSUNAMI SIMULATIONS USING AN UNSTRUCTURED TRIANGULAR MESH SYSTEM Reviewed

    Xinxiang ZENG, Ryosuke AKOH, Tadaharu ISHIKAWA, Takashi NAKAMURA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   69 ( 4 )   I_619 - I_624   2013

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    DOI： 10.2208/jscejhe.69.i_619

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  • Numerical study on seasonal stratified flow and sediment transport in Joumine reservoir Tunisia

    Kakeru Takahira, Mingyang Wang, Takashi Nakamura, Tadaharu Ishikawa, Mitsuteru Irie, Jamila Tarhouni

    The 35th IAHR World Congress, Chengdu, China, 8-13 Sep.   Article No. W-1322   2013

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  • Rapid tsunami simulator on GPU using unstructured mesh system

    Xinxiang Zeng, Takashi Nakamura, Ryosuke Akoh, Tadaharu Ishikawa

    The 35th IAHR World Congress, Chengdu, China, 8-13 Sep.   IAHR Document Library ID: 14380 (8 pages)   2013

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  • A Numerical Investigation on an Influence of a Shallow Water Area on the Salt Water Intrusion in River Takase Reviewed

    Takashi NAKAMURA, Tadaharu ISHIKAWA

    Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)   69 ( 2 )   I_491 - I_495   2013

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/kaigan.69.i_491

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  • A three dimensional model for simulating dynamic behavior of salt water in Tone River estuary, Japan

    Xiaofei Xu, Takashi Nakamura, Yu Kobayashi, Takashi Kojima, Tadaharu Ishikawa

    The 3rd international symposium on shallow flows, Iowa city, USA, 4-6 June.   Article No. 123   2012

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  • APPLICATION OF THREE-DIMENSIONAL CIP-SOROBAN MODEL TO SALT WATER MOVEMENT IN TONE RIVER ESTUARY Reviewed

    Xiaofei XU, Takashi NAKAMURA, Yu KOBAYASHI, Takashi KOJIMA, Tadaharu ISHIKAWA

    Journal of Japan Society of Civil Engineers, Ser. B1 (Hydraulic Engineering)   68 ( 4 )   I_1555 - I_1560   2012

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/jscejhe.68.i_1555

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  • Tadaharu Ishikawa (2012) Modeling of saline water movement in Tone River estuary using three-dimensional CIP-Soroban model Reviewed

    Xiaofei Xu, Takashi Nakamura, Yu Kobayashi, Takashi Kojima, Tadaharu Ishikawa

    Thai Environmental Engineering Journal   January-April   111 - 115   2012

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  • Modeling of saline water movement in Tone River estuary using three-dimensional CIP-SOROBAN model

    Xiaofei Xu, Takashi Nakamura, Yu Kobayashi, Takashi Kojima, Tadaharu Ishikawa

    The 4th AUN/SEED-Net Regional Conference on Global Environment and Seminar of NRCT-JSPS Asian Core Program, Bangkok, Thailand, 18-19 Jan.   2012

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  • CIP-Soroban法に基づく汽水域3次元数値流動モデルの開発 Reviewed

    中村恭志, 石川忠晴

    水工学論文集   54   1441 - 1446   2010

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  • 松花湖の成層流動シミュレーションのための計算条件設定について Reviewed

    小島崇, 何春光, 盛連喜, 石川忠晴, 中村恭志

    水工学論文集   54   1447 - 1452   2010

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  • 小川原湖の密度躍層付近における流動混合の構造について Reviewed

    笹島悠達, 石川忠晴, 中村恭志, 鶴田泰士, 天野光歩, 遠藤真一

    水工学論文集   53   1279 - 1284   2009

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  • A three-dimensional CIP-Soroban solver for an estuary river flow

    T. Nakamura, T. Kojima, T. Ishikawa

    The 3rd International Conference on Estuary and Coasts (ICEC2009), Sendai, Japan, 14-16 Sep.   740 - 747   2009

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  • 氷層内部状態を考慮した貯水池氷層モデルに関する基礎的研究 Reviewed

    賀達, 小島崇, 石川忠晴, 中村恭志

    水工学論文集   53   415 - 420   2009

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  • Multi-scale numerical solver for an estuary river flow using CIP-Soroban method

    T. Nakamura, T. Ishikawa

    The 8th World Congress on Computational Mechanics, Venice, Italy, 30 June - 5 July.   Article No. MS140A   2008

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  • CIP-DEM combined multi-phase solver for a soil compaction mechanism

    Y. Nagano, T. Nakamura

    The 8th World Congress on Computational Mechanics, Venice, Italy, 30 June - 5 July.   Article No. MS-140B   2008

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  • Two-dimensional CIP-Soroban solver toward an efficient water flow analysis in a reservoir

    T. Kojima, T. Nakamura, T. Ishikawa

    The 3rd IAHR International Symposium on Hydraulic Structures (ISHS 2008), Nanjing, China, 20-23 Oct.   1800 - 1805   2008

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  • DEVELOPMENT OF A VERTICAL 2D CIP-SOROBAN SOLVER FOR A WATER FLOW WITH FLUCTUATIONS IN WATER TEMPERATURE IN A RESERVOIR Reviewed

    Takashi KOJIMA, Takashi NAKAMURA, Tadaharu ISHIKAWA

    PROCEEDINGS OF HYDRAULIC ENGINEERING   52   1039 - 1044   2008

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/prohe.52.1039

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  • CIP-SOROBAN METHOD FOR TWO-DIMENSIONAL ESTUARY FLOW WITH A RIVER WIDTH AND FREE WATER SURFACE Reviewed

    Takashi NAKAMURA, Takashi KOJIMA, Tadaharu ISHIKAWA

    PROCEEDINGS OF HYDRAULIC ENGINEERING   50   805 - 810   2006

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/prohe.50.805

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  • Two-dimensional CIP-Soroban solver for an estuary river flow with an arbitrary topography and free water surface

    T. Kojima, T. Nakamura, T. Ishikawa

    The 7th World Congress on Computational Mechanics (WCCM7), LA, USA, 16-22 July.   Article No. 1186   2006

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  • Basic study on DEM large-scale simulation for mixing process of bio-toilet

    T. Nakamura, K. Haga, T. Ishikawa

    The 7th World Congress on Computational Mechanics (WCCM7), LA, USA, 16-22 July.   Article No. 1110   2006

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  • Development of simulation model for mixing process of bio-toilet - basic study on application of DEM simulation to a bio-toilet

    T. Nakamura, M. Irie, T. Ishikawa

    The 3rd International Symposium on Sustainable Sanitation, Xi’an, China, 18-20 Oct.   21 - 26   2005

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  • A NEW NUMERICAL SOLVER FOR A2-D NON-LINEAR-SHALLOW WATER EQUATION USING A SOROBAN GRID SYSTEM. Reviewed

    Takashi NAKAMURA, Tadaharu ISHIKAWA, Takashi Yabe, Kenji Takizawa

    PROCEEDINGS OF HYDRAULIC ENGINEERING   49   685 - 690   2005

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/prohe.49.685

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  • CIP-Soroban method for two-dimensional estuary flow with a river width and free water surface

    Takashi Nakamura, Takashi Kojima, Takashi Yabe, Tadaharu Ishikawa

    The Third Taiwan-Japan Workshop on Mechanical and Aerospace Engineering, Hualien, Taiwan, 28-29 Nov.   2005

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  • Development of CIP-Reversed Weighted Residual Method for Water Flow with Free Water Surface and Arbitrary Topography (Algorithmic Improvements and Applications) Reviewed

    Takashi NAKAMURA, Kentaro KUDO, Tadaharu ISHIKAWA

    JSME International Journal Series B   47 ( 4 )   690 - 698   2004

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Mechanical Engineers  

    DOI： 10.1299/jsmeb.47.690

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  • A NEW NUMERICAL METHOD FOR A 2-D NON-LINEAR SHALLOW WATER EQUATION SATISFAYING BOUNDARY CONDITIONS ON ARBITRARY TOPOGRAPHY AND WATER SURFACE Reviewed

    Kentaro KUDO, Tadaharu ISHIKAWA, Takashi NAKAMURA

    PROCEEDINGS OF HYDRAULIC ENGINEERING   48   691 - 696   2004

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Civil Engineers  

    DOI： 10.2208/prohe.48.691

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  • A new finite element solution of the 2-D multi-phase nonlinear-shallow water flows over arbitrary topography using CIP scheme with fixed Cartesian grid

    T. Nakamura, K. Kudo, T. Ishikawa

    World Congress on Computational Mechanics (WCCM 6) in conjunction with Asian-Pacific Congress on Computational Mechanics (APCOM04), Beijing, China, 5-10 Sep.   Article No. 562   2004

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  • Development of CIP-FEM solver for the water flow with free water surface on fixed Cartesian mesh –basic theory and an application-

    T. Ishikawa, T. Nakamura, K. Kudo

    European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2004), Jyväskylä, Finland, 24-28 July.   Article No. 466   2004

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  • Basic study on numerical modeling for mixing process of bio-toilet

    Gang Qin, Mitsuteru Irie, Takashi Nakamura, Tadaharu Ishikawa

    The 2nd International Symposium on Sustainable Sanitation, Jilin, China, 25-26 Sep.   15 - 20   2004

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  • Microscopic and macroscopic simulations for femtosecond-laser–matter interaction by cubic interpolated propagation method Reviewed

    Yoshiaki Kondoh, Takashi Yabe, Jun Maehara, Takashi Nakamura, Youichi Ogata

    Physical Review E   68 ( 6 )   2003.12

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physreve.68.066408

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevE.68.066408/fulltext

  • Beam Final Transport and Direct-Drive Pellet Implosion in Heavy-Ion Fusion Reviewed

    T. Someya, S. Kawata, T. Nakamura, A. I. Ogoyski, K. Shimizu, J. Sasaki

    Fusion Science and Technology   43 ( 3 )   282 - 289   2003.5

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    Publishing type：Research paper (scientific journal)   Publisher：Informa UK Limited  

    DOI： 10.13182/fst03-a268

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  • Origin of protons accelerated by an intense laser and the dependence of their energy on the plasma density Reviewed

    Takashi Nakamura, Shigeo Kawata

    Physical Review E   67 ( 2 )   2003.2

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    Publishing type：Research paper (scientific journal)   Publisher：American Physical Society (APS)  

    DOI： 10.1103/physreve.67.026403

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    Other Link： http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevE.67.026403/fulltext

  • Conducting versus insulating walls in a heavy ion reaction chamber Reviewed

    J.-L. VAY, S. KAWATA, T. NAKAMURA, J. SASAKI, T. SOMEYA, C. DEUTSCH

    Laser and Particle Beams   21 ( 1 )   41 - 46   2003.1

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    Publishing type：Research paper (scientific journal)   Publisher：Cambridge University Press (CUP)  

    We first pay attention to the inflight charge state distribution in a Pb ion beam propagating in a reactor-sized chamber delimited by metallic walls. We thus compare Livermore (code BIC) and Orsay (code BPIC) distributions in the presence of a residual Flibe gas pressure. Next, we replace the electron plasma due to Flibe ionization by a gliding plasma produced by the polarization of the incoming ion beam on insulating walls. Corresponding electrons, when attracted by the beam, are demonstrated to yield a very efficient current neutralization.

    DOI： 10.1017/s026303460221109x

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  • Heavy ion beam final transport through an insulator guide in heavy ion fusion Reviewed

    SHIGEO KAWATA, TETSUO SOMEYA, TAKASHI NAKAMURA, SHUJI MIYAZAKI, KOJI SHIMIZU, ALEKSANDAR I. OGOYSKI

    Laser and Particle Beams   21 ( 1 )   27 - 32   2003.1

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    Publishing type：Research paper (scientific journal)   Publisher：Cambridge University Press (CUP)  

    Key issues of heavy ion beam (HIB) inertial confinement fusion (ICF) include an efficient stable beam transport, beam focusing, uniform fuel pellet implosion, and so on. To realize a HIB fine focus on a fuel pellet, space-charge neutralization of incident focusing HIB is required at the HIB final transport just after a final focusing element in an HIB accelerator. In this article, an insulator annular tube guide is proposed at the final transport part, through which a HIB is transported. The physical mechanism of HIB charge neutralization based on an insulator annular guide is as follows: A local electric field created by HIB induces local discharges, and plasma is produced on the insulator inner surface. Then electrons are extracted from the plasma by the HIB net space charge. The electrons emitted neutralize the HIB space charge well.

    DOI： 10.1017/s0263034602211064

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  • Maxwell Vlasov simulation for laser electron acceleration

    T. Nakamura, M. Shitamura, K. Miyauchi, S. Kawata

    The 3rd international conference on inertial fusion sciences and applications (IFSA2003), Monterey, California, USA, 7-12 Sep.   1053 - 1056   2003

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  • Hyper-dimensional Vlasov solver by CIP method

    T. Nakamura, M. Shitamura, Y. Uchida, S. Kawata

    The 3rd International Workshop on Basic Aspects of Non-equilibrium Plasmas Interacting with Surfaces (BANPIS2003), Awaji, Japan, 7-8 Feb.   Article No. P-30   2003

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  • GRID-based micro-plasma simulator and its applications

    S. Kawata, T. Nagasawa, N. Yugami, T. Nakamura, S. Miyazaki, S. Sato

    The 3rd International Workshop on Basic Aspects of Non-equilibrium Plasmas Interacting with Surfaces (BANPIS2003), Awaji, Japan, 7-8 Feb.   Article No. P-31   2003

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  • High-energy proton generation from a thin plasma target illuminated by ultra-intense fs laser

    T. Nakamura, S. Miyazaki, Q. Kong, N. Okazaki, S. Kawata

    The 3rd International Workshop on Basic Aspects of Non-equilibrium Plasmas Interacting with Surfaces (BANPIS2003), Awaji, Japan, 7-8 Feb.   Article No. P-29   2003

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  • CIP法とFEMの組み合わせによる遡上波の新計算法に関する基礎的検討 Reviewed

    石川忠晴, 工藤健太郎, 中村恭志, 苅籠泰彦

    海岸工学論文集   50   136 - 140   2003

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.2208/proce1989.50.136

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  • High energy protons and magnetic field in a slab plasma illuminated by an intense short pulse laser

    T. Nakamura, S. Miyazaki, Qing. Kong, N. Okazaki, S. Kawata

    The 3rd international conference on inertial fusion sciences and applications (IFSA2003), Monterey, California, USA, 7-12 Sep.   Article No. TuPo1.22   2003

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  • Multi-dimensional semi-Lagrangian scheme that guarantees exact conservation Reviewed

    K. Takizawa, T. Yabe, T. Nakamura

    Computer Physics Communications   148 ( 2 )   137 - 159   2002.10

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/s0010-4655(02)00472-1

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  • High-energy proton beam generation from a slab plasma illuminated by ultra-intense fs laser

    T. Nakamura, N. Okazaki, S. Kawata

    The 14th International Symposium on Heavy Ion Inertial Fusion, Moscow, Russia, 26-31 May.   52   2002

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  • Beam final transport and direct drive pellet implosion in heavy-ion fusion

    S. Kawata, T. Someya, A. Ogoyski, T. Nakamura

    The 2nd IAEA Technical Meeting on Physics and Technology of Inertial Fusion Energy Targets and Chambers, San Diego, California, USA, 17-19 June.   2002

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  • Microscopic and Macroscopic Simulation of Ultra-Short-Pulse Laser Processing by CIP Method. Reviewed

    Yoshiaki KONDOH, Takashi YABE, Jun MAEHARA, Youichi OGATA, Takashi NAKAMURA

    Journal of Plasma and Fusion Research   78 ( 12 )   1280 - 1281   2002

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    Publishing type：Research paper (scientific journal)   Publisher：Japan Society of Plasma Science and Nuclear Fusion Research  

    DOI： 10.1585/jspf.78.1280

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  • Numerical algorithm improvements and special-purpose computer for hyper-dimensional Fokker-Planck simulations

    T. Nakamura, M. Shitamura, Y. Uchida, S. Kawata

    The 14th International Symposium on Heavy Ion Inertial Fusion, Moscow, Russia, 26-31 May.   53   2002

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  • Exactly Conservative Semi-Lagrangian Scheme for Multi-dimensional Hyperbolic Equations with Directional Splitting Technique Reviewed

    Takashi Nakamura, Ryotaro Tanaka, Takashi Yabe, Kenji Takizawa

    Journal of Computational Physics   174 ( 1 )   171 - 207   2001.11

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1006/jcph.2001.6888

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  • Beam Non-Uniformity Smoothing Using Density Valley Formed by Heavy Ion Beam Deposition in Inertial Confinement Fusion Fuel Pellet Reviewed

    Jun Sasaki B. Blagoev, Shigeo Kawata Shigeo Kawata

    Japanese Journal of Applied Physics   40 ( 2S )   968 - 968   2001.2

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    Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing  

    We study the beam nonuniformity smoothing effect of radiation transport in the density valley formed by an ion-beam deposition in a heavy ion-beam inertial confinement fusion pellet by numerical simulations. The simulation results show that the radiation energy is confined in the density valley, and the beam nonuniformity can be smoothed out by the radiation transport along the density valley. In addition, an estimation for the Rayleigh-Taylor instability during the implosion phase is also presented.

    DOI： 10.1143/jjap.40.968

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    Other Link： https://iopscience.iop.org/article/10.1143/JJAP.40.968/pdf

  • An Exactly Conservative Semi-Lagrangian Scheme (CIP–CSL) in One Dimension Reviewed

    T. Yabe, R. Tanaka, T. Nakamura, F. Xiao

    Monthly Weather Review   129 ( 2 )   332 - 344   2001.2

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    Publishing type：Research paper (scientific journal)   Publisher：American Meteorological Society  

    DOI： 10.1175/1520-0493(2001)129<0332:aecsls>2.0.co;2

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  • Toward an ultimate goal for universal solution by the CIP method Reviewed

    T. Yabe, T. Nakamura, M. Kuwata, H. Makuuchi

    Computational Fluid Dynamics Journal   9   599 - 607   2001

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  • Proton energy dependence on a target density and origin of protons in short-pulse laser plasma interaction

    T. Nakamura, S. Kawata

    The 43rd Annual Meeting of the APS Division of Plasma Physics, Long Beach, California, USA, 29 Oct. – 2 Nov.   Article No. UP1.067   2001

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  • Heavy ion beam transport and focusing with an insulator guide in inertial confinement fusion

    T. Someya, T. Nakamura, J. Sasaki, S. Kawata

    Workshop on extremely high energy density plasmas and their diagnostics, Gifu, Japan, 8-9 Mar.   7 - 13   2001

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  • Beam final transport and focusing in heavy ion beam inertial confinement fusion

    T. Someya, T. Nakamura, M. Shitamura, S. Kawata

    International conference on inertial fusion sciences and applications (IFSA2001), Kyoto, Japan, 9-14 Sep.   612 - 615   2001

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  • Dependence of high-energy proton production on a slab plasma density illuminated by a high-power short-pulse laser and origin of protons

    T. Nakamura, S. Kawata

    International conference on inertial fusion sciences and applications (IFSA2001), Kyoto, Japan, 9-14 Sep.   311 - 314   2001

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  • Conservative constrained interpolation profile scheme for the simulation of the high-energy plasma

    T. Nakamura, Y. Uchida, K. Shimizu, M. Shitamura, S. Kawata

    International Conference on Phenomena in Ionized Gases (ICPIG), Nagoya, Japan, 17-22 July.   297 - 298   2001

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  • Accelerator System and Final Beam Transport in Heavy Ion Inertial Confinement Fusion Reviewed

    C. Deutsch, S. Kawata, T. Nakamura

    Journal of Plasma and Fusion Research   77   33 - 39   2001

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  • Direct numerical solution of collision term in the Fokker-Planck equation toward a laser-plasma interaction

    Y. Uchida, T. Nakamura, K. Shimizu, M. Shitamura, S. Kawata

    International conference on inertial fusion sciences and applications (IFSA2001), Kyoto, Japan, 9-14 Sep.   276 - 280   2001

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  • Constrained interpolation profile scheme for solving the hyper-dimensional Vlasov-Maxwell system in laser-plasma interaction

    T. Nakamura, Y. Uchida, M. Shitamura, S. Kawata

    International conference on inertial fusion sciences and applications (IFSA2001), Kyoto, Japan, 9-14 Sep.   306 - 310   2001

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  • Implosion nonuniformity smoothing effect by radiation in a density valley formed by a heavy ion beam in inertial confinement fusion

    J. Sasaki, T. Nakamura, T. Someya, K. Shimizu, S. Kawata

    International conference on inertial fusion sciences and applications (IFSA2001), Kyoto, Japan, 9-14 Sep.   143 - 146   2001

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  • Construction of Distributed Education Support System by Using Database Reviewed

    TERAMOTO Takayuki, OKADA Tadashi, Aoyama Ryuithi, SAITOU Tomoya, NAKAMURA Takashi, KAWATA Shigeo

    Transactions of the Japan Society for Computational Engineering and Science   2001   20010008 - 20010008   2001

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE  

    In these days personal computers (PCs) became an essential part of today&rsquo;s school education. However teachers or lecturers meet difficulties to obtain the information about how all the students operate computers or which softwares they use. In this work we construct a teaching assistant system which acquires information about the student&rsquo;s computer operation and analyzes the information. The system, that is called a TSUNA-TASTE, consists of four major components. The first component is a distributed agent that is installed in each student&rsquo;s personal computer and acquires the student operation information. The second component is a teaching assistant server that communicates with the agents and analyzes the information. The third component is a database system which stores the student operation information and other configuration data. The fourth is a communication system using a WWW server and a browser. In this paper we present and discuss a design concept of the system and the details of each component.

    DOI： 10.11421/jsces.2001.20010008

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  • A Distributed Problem Solving Environment (PSE) for Partial Differential Equation Based Problems Reviewed

    TERAMOTO Takayuki, NAKAMURA Takashi, KAWATA Shigeo, MATIDE Syunsuke, HAYASAKA Koji, NONAKA Hidetaka, SASAKI Eiji, SANADA Yasuhiro

    Transactions of the Japan Society for Computational Engineering and Science   2001   20010018 - 20010018   2001

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：JAPAN SOCIETY FOR COMPUTATIONAL ENGINEERING AND SCIENCE  

    In this paper, we present and construct a distributed problem solving environment (PSE) for partial differential equation (PDE) based problems. The system inputs a problem information including a discretization and computation scheme, and outputs a program flow and also a C-language source code for the problem. On a host computer a user inputs his/her problem, and the host navigates the user to solve the problem. The distributed PSE for PDEs consists of several modules: a problem description module, a discretization one, an equation manipulation one, a program design one and a program generation one. Each module is distributed on distributed computers, and the whole information is described by the Extensible Markup Language (XML) including the Mathematical Markup Language (MathML); each distributed module communicates with the host module by using XML documents, so that outputs from each modules are visualized. Independent modules which are developed by other engineers or users for one of the functions specified above can be also used after adjustments to the distributed PSE interface, if necessary. Therefore the concept of the distributed PSE extends the potential of conventional PSE systems. The system is implemented by the Java language with the Document Object Model (DOM), in order to make the system a networked and distributed PSE.

    DOI： 10.11421/jsces.2001.20010018

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  • Multi-dimensional conservative scheme (CIP-CN4) in non-conservative form Reviewed

    T. Nakamura, R. Tanaka, T. Yabe

    Computational Fluid Dynamics Journal   9   574 - 585   2001

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  • Constructing exactly conservative scheme in a non-conservative form Reviewed

    R. Tanaka, T. Nakamura, T. Yabe

    Computer Physics Communications   126 ( 3 )   232 - 243   2000.4

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/s0010-4655(99)00473-7

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  • Intense-electron-beam transport control through an insulator beam collimator

    T. Kikuchi, T. Nakamura, J. Sasaki, S. Kato, S. Kawata

    13th International Conference on High-Power Particle Beams (BEAMS2000), Nagaoka, Japan, 25-30 June.   532 - 535   2000

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  • Numerical method for Vlasov-Poisson system

    Takashi Nakamura, Shigeo Kawata

    The fifth Japan-US workshop on physics and engineering of heavy ion inertial fusion, Tokyo, Japan, 7-8 Dec.   261 - 274   2000

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  • 数学モデルからの領域分割による並列数値シミュレーションプログラム生成支援環境P-NCASの構築 Reviewed

    藤田彰, 寺元貴幸, 中村恭志, Choompol Boonmee, 川田重夫

    日本計算工学会論文集   2000   論文ID: 20000037   2000

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.11421/jsces.2000.20000037

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  • Constructing the six-dimensional Vlasov solver using constrained interpolation profile scheme

    Takashi Nakamura, Takashi Yabe

    The 13th International Conference on High-Power Particle Beams (BEAMS2000), Nagaoka, Japan, 25-30 June.   873 - 876   2000

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  • Beam-nonuniformity smoothing using density valley formed by ion beam deposition in an ICF fuel pellet

    J. Sasaki, T. Nakamura, K. Fujita, T. Nagai, S. Kawata

    The 13th International Conference on High-Power Particle Beams (BEAMS2000), Nagaoka, Japan, 25-30 June.   829 - 833   2000

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  • Intense-heavy-ion-beam transport through an insulator beam collimator

    T. Kikuchi, T. Nakamura, J. Sasaki, S. Kato, S. Kawata

    13th International Conference on High-Power Particle Beams (BEAMS2000), Nagaoka, Japan, 25-30 June.   556 - 559   2000

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  • Cubic interpolated propagation scheme for solving the hyper-dimensional Vlasov—Poisson equation in phase space Reviewed

    Takashi Nakamura, Takashi Yabe

    Computer Physics Communications   120 ( 2-3 )   122 - 154   1999.8

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/s0010-4655(99)00247-7

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  • Simulation of laser-matter interaction by conservative CIP method

    Takashi Nakamura, T. Yabe

    International conference on inertial fusion sciences and applications (IFSA'99), Bordeaux, France, 12-17 Sep.   Article No. Th/PO46280   1999

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  • Hyper dimensional phase-space solver and its application to laser-matter interaction

    T. Nakamura, T. Yabe

    International conference on inertial fusion sciences and applications (IFSA'99), Bordeaux, France, 12-17 Sep.   Article No. W/PO2279   1999

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  • Constructing non-conservative formulation scheme to conserve exactly for conservative equation

    R. Tanaka, T. Nakamura, T. Yabe

    International Symposium on Computational Fluid Dynamics (ISCFD99), Bremen, Germany, 5-10 Sep.   Article No. 10S22140   1999

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  • Cubic interpolated propagation scheme for solving the Vlasov equation in six-dimensional phase space

    T. Nakamura, T. Yabe

    International Symposium on Computational Fluid Dynamics (ISCFD99), Bremen, Germany, 5-10 Sep.   Article No. 10S22143   1999

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  • Hyper dimensional phase-space solver and its application to laser-matter

    Y. Kondoh, T. Nakamura, T. Yabe

    The 1st Symposium on Advanced Photon Research, Kyoto, Japan, 8-9 Nov.   185 - 188   1999

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  • A class of conservative formulation of the CIP method Reviewed

    R. Tanaka, T. Yabe, T. Nakamura, H. Wu

    Computer Fluid Dynamics (CFD) Journal   8   1 - 5   1999

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  • Radiation inhomogeneity smoothing in a valley formed by ion beam deposition in ICF fuel pellet

    J. Sasaki, T. Nakamura, T. Nagai, K. Fujita, T. Kikuchi, S. Kawata

    Symposium on Physics and Applications of Extreme Energy-Density State, Gifu, Japan, 25-26 Nov.   145 - 154   1999

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  • A dream to solve all phases of matter, solid, liquid, and gas, simultaneously

    T. Yabe, Y. Ogata, T. Nakamura, Y. Zhang

    International Conference on Numerical Astrophysics 1998 (NAP98), Tokyo, Japan, 10-13 Mar.   349 - 356   1998

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Books

  • 環境を可視化する技術と応用

    中村恭志, 浅輪貴史（ Role： Joint author筆頭編著者（4章分を単著または第1著者として執筆し，他1章を分担執筆））

    放送大学教育振興会  2023.3  （ ISBN:9784595324123 ）

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    Total pages：267p, 図版18p   Language：Japanese  

    CiNii Books

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  • Hydrology of the inflow river basins

    Rattana Chhin, Sokly Siev, Ichiro Yoneda, Takashi Nakamura, Chihiro Yoshimura, Hideto Fujii（ Role： ContributorChapter 8 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Total suspended solid dynamics revealed by long-term satellite image analysis

    Keisuke Hoshikawa, Yoichi Fujihara, Sokly Siev, Seiya Arai, Takashi Nakamura, Hideto Fujii, Ty Sok, Chihiro Yoshimura（ Role： ContributorChapter 18 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Health risk assessment of a floating village based on a three-dimensional hydraulic model

    Takashi Nakamura, Toru Watanabe, Akino Kuwagaki（ Role： ContributorChapter 41 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Impact of climate change on the hydrological regime of Tonle Sap Lake

    Hideto Fujii, Ichiro Yoneda, Yoichi Fujihara, Keisuke Hoshikawa, Takashi Nakamura（ Role： ContributorChapter 43 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Improvement of a hydrological model performance by satellite rainfall product

    Hideto Fujii, Ichiro Yoneda, Yoichi Fujihara, Keisuke Hoshikawa, Takashi Nakamura（ Role： ContributorChapter 10 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Discharge measurement and hydraulic characteristics in the Tonle Sap River

    Hideto Fujii, Takashi Nakamura, Lun Sambo, Ly Sarann, Keisuke Hoshikawa, Yoichi Fujihara（ Role： ContributorChapter 12 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Flow regime of a floating village using a three-dimensional hydraulic model

    Takashi Nakamura, Hideto Fujii, Ly Sarann, Lun Sambo, Heng Sokchhay, Yoichi Fujihara, Keisuke Hoshikawa（ Role： ContributorChapter 16 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Inundation and water surface temperature: satellite-based observation

    Yoichi Fujihara, Keisuke Hoshikawa, Hideto Fujii, Takashi Nakamura, Sokly Siev（ Role： ContributorChapter 7 in C. Yoshimura, R. Khanal, U. Sovannara (Eds.) Water and Life in Tonle Sap Lake）

    Springer Singapore  2022 

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  • Hydrological changes in the Mekong River and Tonle Sap Lake basin

    Hideto Fujii, Tomohiro Tanaka, Hidekazu Yoshioka, Takashi Nakamura, Yoichi Fujihara, Keisuke Hoshikawa, Sarann Ly, Sambo Lun, Sokchhay Heng, Sokly Siev（ Role： ContributorChapter 3 in Binaya Raj Shivakoti and Ngoc-Bao Pham (Eds.) Environmental Changes in Tonle Sap Lake and its Floodplain: Status and Policy Recommendations）

    Institute for Global Environmental Strategies, Kanagawa, Japan  2020 

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  • 環境の可視化

    梅干野 晁, 中村 恭志（ Role： Joint author編著者（3章分を単著として執筆し，他3章を分担執筆））

    放送大学教育振興会  2015 

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  • マイクロプラズマシミュレーション

    川田重夫, 中村恭志（ Role： Contributor橘邦英, 寺島和夫 監修『マイクロ・ナノプラズマ技術とその産業応用』第3章）

    （株）シーエムシー出版  2006 

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  • 水・風・雲は流れている

    中村恭志（ Role： Contributor寺元貴幸, 早勢欣和, 宮地英生 著「みるみる身につくC言語」第6章第2節）

    共立出版（株）  2001 

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  • シミュレーションを支援するシステム

    川田重夫, 藤田彰, ブンミー・チュンポル, 中村恭志（ Role： Contributor川田重夫, 田子精男, 梅谷征雄 編 「シミュレーション科学への招待」第4章）

    日経サイエンス社  2000 

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  • Visual steering of the simulation process in a scientific numerical simulation environment NCAS-

    S. Kawata, C. Boonmee, A. Fujita, T. Nakamura, T. Teramoto, Y. Hayase, Y. Manabe, Y. Tago, M. Matsumoto（ Role： ContributorIn: Houstis, E.N., Rice, J.R., Gallopoulos, E., Bramley, R. (eds), Enabling Technologies for Computational Science, The Springer International Series in Engineering and Computer Science, vol 548）

    Springer, Boston, MA  2000 

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MISC

  • MPIによる並列プログラミングと分散PSEシステム

    中村恭志, 川田重夫

    物理探査学会誌   57 ( 6 )   591 - 603   2004

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  • パルスパワーによる慣性核融合の研究

    中村恭志

    日米科学技術協力事業核融合分野事業報告会資料   201 - 205   2002

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    Publishing type：Internal/External technical report, pre-print, etc.  

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  • 超高強度レーザー・プラズマ相互作用に向けた高次元・高精度Vlasov-Maxwellコードの開発

    川田重夫, 中村恭志

    レーザー研シンポジウム共同研究成果報告書   73 - 74   2002

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    Publishing type：Internal/External technical report, pre-print, etc.  

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  • Exactly Conservative Semi-Lagrangian Scheme (CIP-CSL) in One-Dimension

    R. Tanaka, T, Nakamura, T. Yabe

    National Institute of Fusion Science Research Report (NIFS-Series)   NIFS-685   2000

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    Publishing type：Internal/External technical report, pre-print, etc.  

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  • 固体・液体・気体の統一解法とＣＩＰ法(３)

    矢部孝, 肖鋒, 中村恭志

    日本数値流体力学会誌   7 ( 4 )   133   2000

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  • Constructing exactly conservative scheme in a non-conservative form

    R. Tanaka, T. Nakamura, T. Yabe

    National Institute of Fusion Science Research Report (NIFS-Series)   NIFS-608   1999

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    Publishing type：Internal/External technical report, pre-print, etc.  

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  • Cubic interpolated propagation scheme for solving the hyper-dimensional Vlasov-Poisson equation in phase space

    T. Nakamura, T. Yabe

    National Institute of Fusion Science Research Report (NIFS-Series)   NIFS-587   1999

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  • 重粒子による乾燥DNA主鎖切断の誘発機構

    檜枝光太郎, 中村恭志, 冨田雅典, 檜枝美和子, 原岳広, 佐藤幸夫, 古澤佳也

    粒子線がん治療加速器に関する共同研究報告書, HIMAC-015 (NIRS-M-121)   116   1997

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  • Mechanism of the Induction of DNA Strand Breaks by Carbon Ions

    M. Tomita, T. Fujisaki, M. Hieda, T. Oosaki, T. Nakamura, H. Murayama, T. Hara, H. Yamaguchi, K. Hieda

    Annual Report of the Research Project with Heavy Ions at NIRS-HIMAC, HIMAC-020 (NIRS-M-125)   222 - 227   1997

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Presentations

  • 6次元位相空間CIP法によるブラゾフ方程式の解法

    中村恭志, 矢部孝

    CIPUS (CIP User) 第4回年会 (CIPUS - A97 ), 東京，1997年, pp.413-414  1997 

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  • CIP法によるブラゾフ・ボルツマン方程式の数値解法

    中村恭志, 矢部孝

    第3回NEXT(Numerical EXperiments of Tokamak)研究会, 東京, 1997年9月, pp.34  1997.9 

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  • CIP法によるVlasov, Boltzmann方程式の数値解法

    中村恭志, 矢部孝

    第11回数値流体シンポジウム, 東京，1997年12月, pp.413-414  1997.12 

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  • 間接照射型慣性核融合における燃料ペレット爆縮の均一化に関する研究

    佐々木淳, 中村恭志, 染谷哲勇, 清水幸治, 下夕村真由美, 川田重夫

    電気学会パルスパワー研究会, PPT-01, 狛江市，2001年1月, pp.29-30  2001.1 

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  • 重イオン慣性核融合プラズマにおけるMaxwell-Boltzmann方程式の高精度数値解法

    内田好則, 下タ村真由美, 中村恭志, 寺元貴之, 清水幸治, 川田重夫

    日本物理学会第56回年次大会, 八王子市，2001年3月, vol2, pp.175  2001.3 

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  • 重イオンビーム慣性核癒合における燃料ペレット爆縮の均一化に関する研究

    佐々木淳, 中村恭志, 寺元貴幸, 内田好則, 清水幸治, 染谷哲勇, 下タ村真由美, 川田重夫

    日本物理学会第56回年次大会, 八王子市，2001年3月, vol2, pp183  2001.3 

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  • 重イオン慣性核融合におけるビーム高効率輸送および収束に関する研究

    染谷哲勇, 中村恭志, 寺元貴幸, 佐々木淳, 内田好則, 下タ村真由美, 清水幸治, 川田重夫

    日本物理学会第56回年次大会, 八王子市，2001年3月, vol2, pp.175  2001.3 

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  • 保存型セミラグランジュCIP法の開発

    中村恭志, 矢部孝

    日本流体力学会2000年会, 京都，2000年7月, pp.169-170  2000.7 

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  • プラズマシミュレーションに向けた保存型高精度数値解析手法の開発

    内田好則, 中村恭志, 清水幸次, 下タ村真由美, 矢部孝, 川田重夫

    日本物理学会第55回年次大会, 新潟，2000年9月, Vol.2, pp.153  2000.9 

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  • 重イオンビーム慣性核融合燃料ペレットにおける低密度領域の形成

    佐々木淳, 中村恭志, 染谷哲夫, 清水幸次, 下タ村真由美, 川田重夫

    日本物理学会第55回年次大会, 新潟，2000年9月, Vol.2, pp.153  2000.9 

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  • 非保存型CIP法による完全保存

    中村恭志, 川田重夫, 矢部孝

    日本応用数理学会2000年度年会, 東京，2000年10月, pp.28-29  2000.10 

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  • Constrained Interpolation Profile (CIP) scheme and its extension to conservative scheme

    T. Nakamura, Y. Uchida, K. Shimizu, M. Shitamura, S. Kawata

    第3回問題解決環境ワークショップ, 宇都宮，2000年, pp.86-91  2000 

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  • 差分法用の離散化および生成モジュールについて

    早坂浩二, 寺元貴幸, 中村恭志, 町出俊介, 野中英隆, 佐々木英治, 真田靖弘, 川田重夫

    日本計算工学会計算工学講演会, 東京，2001年5月, Vol.6, pp.359-362  2001.5 

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  • CIP法による電磁場と衝突を考慮したVlasov-Maxwell系の４次元位相空間シミュレーション

    近藤芳昭, 中村恭志, 矢部孝

    第13回数値流体シンポジウム, 東京，1999年12月, pp.207  1999.12 

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  • ワールドモデルによるエネルギー消費形態への環境ファクターの影響

    永井利昌, 佐々木淳, 中村恭志, 川田重夫

    エネルギーシステム・経済・環境コンファレンス講演論文集, 東京，2000年1月, 16, pp.573-578  2000.1 

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  • 数値シミュレーション支援環境における方程式入力支援

    早坂浩二, 野中英隆, 吉本和史, 寺元貴幸, 中村恭志, 川田重夫

    第3回問題解決環境ワークショップ, 宇都宮，2000年  2000 

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  • 有限要素法における数値シミュレーション支援に関する研究

    町出俊介, 佐々木英治, 真田靖之, 寺元貴幸, 中村恭志, 川田重夫

    第3回問題解決環境ワークショップ, 宇都宮，2000年, pp.97-102  2000 

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  • CIP法による高次元Vlasov方程式の数値解法

    中村恭志, 矢部孝

    第12回数値流体シンポジウム, 東京, 1998年12月, pp.87-88  1998.12 

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  • 流体から希薄流体への新しい計算手法

    中村恭志, 矢部孝

    日本機械学会1999年度年次大会, 東京，1999年7月, Vol. I, pp.73-74  1999.7 

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  • CIP法による高次元Vlasov方程式の応用・並列化に関して

    中村恭志, 矢部孝

    第13回数値流体シンポジウム, 東京，1999年12月, pp.206  1999.12 

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  • 非保存形式における保存スキームの開発

    田中亮太郎, 中村恭志, 矢部孝

    第13回数値流体シンポジウム, 東京，1999年12月, pp.262  1999.12 

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  • 保存型CIP法の多次元への拡張と応用

    内田好則, 中村恭志, 清水幸治, 下タ村真由美, 矢部孝, 川田重夫

    第3回問題解決環境ワークショップ, 宇都宮，2000年, pp.103-108  2000 

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  • P-NCAS: 数学モデルからの並列数値シミュレーションプログラム生成支援環境

    川田重夫, 寺元貴幸, 中村恭志, 藤田彰

    第3回問題解決環境ワークショップ, 宇都宮，2000年, pp.109-114  2000 

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  • 小川原湖北東部浅水域における塩水侵入へ塩水侵入規模と風場が及ぼす影響の検討

    中村恭志, 岩田幸治

    水工学講演会, 仙台, 2016年3月  2016.3 

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  • 人体・流れ場連成数値解析に基づく津波被災時の溺水危険性評価

    安嶋大稀, 中村恭志, 荒木達斗, 井上徹教

    日本機械学会第30回計算力学講演会, 東大阪，2017年9月  2017.9 

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  • 人体・流れ場連成数値解析に基づく津波被災時の溺水危険性評価

    安嶋大稀, 中村恭志, 荒木達斗, 井上徹教

    スポーツ工学・ヒューマンダイナミクス2017(SHD2017), 金沢, 2017年11月  2017.11 

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  • 人体流動連成解析に基づく溺水数値解析シミュレーションモデルの開発

    中村恭志, 安嶋大稀, 相澤敦武, 井上徹教

    水工学講演会, 福岡，2018年3月  2018.3 

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  • トンレサップ川の流況のADCPによる観測と精度低下要因

    藤井秀人, 中村恭, LY Sarann, LUN Sambo, HENG Sokchhay, 藤原洋一, 星川圭介, 中田正人

    農業農村工学会大会, 東京, 2019年9月, ROMBUNNO.5-52, 2019  2019.9 

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  • 水路底面上に沈んだ人体の流れによる移動の基礎的検討

    殿山俊吾, 中村恭志, 井上徹教

    スポーツ・アンド・ヒューマン・ダイナミクス(SHD2019), 福岡，2019年10月, セッションID C-5  2019.10 

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  • MODIS Aqua長期反射率データを用いた湖水懸濁要因の解明

    星川圭介, 藤原洋一, SIEV Sokly, 中村恭志, 吉村千洋, 藤井秀人

    日本写真測量学会学術講演会, 東京，2018年5月，pp.159-162  2018.5 

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  • 数値シミュレーションによる東京都呑川汽水域における有機性懸濁物堆積過程の検討

    三浦心, 中村恭志, 石川忠晴, 古田島樹

    水工学講演会, 札幌，2018年11月  2018.11 

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  • 東京都呑川における有機性懸濁物の堆積とスカム発生に関する現地観測

    三浦心, 石川忠晴, 中村恭志, 古田島樹, 前田卓見, 金子拓史

    水工学講演会, 札幌，2018年11月  2018.11 

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  • 2次元水質モデルを用いたトンレサップ湖の水質汚濁解析

    米田一路, 中村恭志, 西山正晃, 渡部徹

    日本水環境学会年会講演集, 甲府，2019年3月，p.386  2019.3 

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  • 非構造格子に基づく浅水波方程式解法のGPGPUによる高速化

    曾新翔, 赤穗良輔, 中村恭志

    第25回計算力学講演会, 神戸, 2012年10月, pp.273-275  2012.10 

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  • 非構造三角形格子と有限体積法に基づく津波数値解析における計算誤差とAMR法の有効性に関する検討

    曾新翔, 中村恭志, 赤穂良輔, 石川忠晴

    水工学講演会, 名古屋，2013年3月  2013.3 

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  • 小川原湖に侵入する塩水傾斜プルームの３次元数値流動解析

    中村恭志, 眞貝憲史, 石川忠晴

    河川技術に関するシンポジウム, 東京, 2013年6月.  2013.6 

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  • 小川原湖への塩水侵入過程へ北部湖棚が及ぼす影響の数値流動解析による検討

    中村恭志, 岩田幸治

    第70回土木学会年次学術講演会, 岡山，2015年9月，ROMBUNNO.II-008  2015.9 

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  • 断面河道合流部の流れの現地研究

    新井奈々絵, 赤穂良輔, 石川忠晴, 中村恭志

    土木学会年次学術講演会, 岡山，2015年9月，ROMBUNNO.II-054  2015.9 

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  • 高次元Soroban格子に向けた低計算負荷・高精度 CIP 補間法の検討

    中村恭志, 安嶋大稀

    第29回数値流体力学シンポジウム, 福岡，2015年12月，ROMBUNNO.C05-1  2015.12 

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  • 東北地方太平洋沖地震に伴う河床地形変化が北上川塩水挙動に及ぼす影響の数値流動解析による検討

    中村恭志, 菊池喬, 石川忠晴

    河川技術に関するシンポジウム, 東京, 2013年6月  2013.6 

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  • 青森県高瀬川河口域の浅瀬が塩水遡上に与える影響に関する三次元数値流動解析による研究

    中村恭志, 石川忠晴

    海岸工学講演会, 福岡，2013年11月  2013.11 

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  • 三角形格子を用いた市街地における津波の数値シミュレーション

    赤穂良輔, 畠山峻一, 石川忠晴, 中村恭志, ZENG Xinxiang

    数値流体力学シンポジウム, 名古屋, 2013年12月, ROMBUNNO.B07-3.  2013.12 

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  • 岩手県釜石市街地における2011年東北地方太平洋沖地震津波の氾濫解析

    赤穗良輔, 石川忠晴, 畠山峻一, 小島崇, 都丸真人, 中村恭志

    水工学講演会, 東京，2015年3月  2015.3 

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  • IMPACT FORCE OF SNOW AVALANCHE ON A MOVABLE HUMAN BODY

    I-Chen Tsai, Takashi Nakamura

    2024.12 

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  • Dynamics of an inverted flag with different inclinations in an oscillatory flow

    Jiantao Zhang, Takashi Nakamura

    the 38th Computational Fluid Dynamics Symposium, Meguro, Tokyo, Japan, Dec. 2024  2024.12 

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  • 救命胴衣形状が生存性に与える影響の数値流動解析による検討

    一ノ瀬航平, 中村恭志

    数値流体力学シンポジウム，北九州市，2025年12月, Paper No. OS3-4-1-04  2025.12 

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  • 用水路における溺水事故に水路幅が与える影響の人体-流動連成数値解析を用いた検討

    丸木悠, 中村恭志

    水工学講演会, 郡山, 2025年12月, pp. 198_1- 198_7  2025.12 

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  • 人体-流体連成数値解析による救命胴衣形状が溺水生存性に与える影響の検討

    一ノ瀬航平, 中村恭志

    混相流シンポジウム, 札幌，2023  2023.8 

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  • 人体-流動連成数値解析による高所からの落水事故の傷害リスク評価, 水工学講演会

    篠原裕幸, 中村恭志

    水工学講演会, 大阪，2023年12月.  2023.12 

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  • 堰状構造物による水難事故被害者の流下阻止に関する基礎的検討

    殿山俊吾, 中村恭志, 井上徹教

    水工学講演会, 大宮，2019年11月  2019.11 

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  • カンボジア・トンレサップ湖における水温変動解析-Google Earth Engineを活用して-

    藤原洋一, 奥山浩気, 星川圭介, 藤井秀人, 中村恭志, LUN Sambo

    農業農村工学会大会講演会講演要旨集, 福島, 2021年8月, ROMBUNNO.6-3  2021.8 

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  • 三次元火砕サージ流動モデルによる大気連行の再現計算

    殿山俊吾, 中村恭志

    日本火山学会 2021年度 秋季大会, オンライン開催，2021年10月,日本火山学会講演予稿集, B2-11, p. 64  2021.10 

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  • A weak-coupling CIP/IB method for free-surface flow interacting with flexible structure

    Zhang, Jiantao, Nakamura, Takashi

    the 35th Computational Fluid Dynamics Symposium, Nov. 2021, Paper No. C02-05  2021.11 

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  • 障害物を持つ水路での流れによる人体輸送の数値計算

    殿山俊吾, 中村恭志, 井上徹教

    第33回数値流体力学シンポジウム, 札幌，2019年11月, ID:E10-5  2019.11 

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  • Numerical study of performance of flapping foil in ground effect

    Jiantao Zhang, Takashi Nakamura

    the 36th Computational Fluid Dynamics Symposium, Yokohama, Kanagawa, Japan, Dec. 2022  2022.12 

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  • 人体流動連成シミュレーションによるローヘッドダム循環流の溺水危険性評価

    関谷宏紀, 中村恭志

    スポーツ工学・ヒューマンダイナミクス2021(SHD2021), オンライン開催，2021年11月, Paper No. A-3-1  2021.11 

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  • 陸上を遡上する津波先端に対する救命胴衣の有効性と傷害リスクの評価

    富田志歩, 中村恭志

    スポーツ工学・ヒューマンダイナミクス2021(SHD2021), オンライン開催，2021年11月, Paper No. A-3-2  2021.11 

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  • 人体–流動連成数値解析によるローヘッドダムにおける溺水危険性の基礎的検討

    関谷宏紀, 中村恭志

    水工学講演会, 松山，2022年11月  2022.11 

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  • Validation of 3D multiphase pyroclastic dilute current model: effects of confinement on the flows

    Shungo Tonoyama, Takashi Nakamura

    NFS workshop ‘PDC dynamics and hazards – Benchmarking of concentrated PDC models and other avenues’, 26 Nov. to 4 Dec 2022, Martinique island, France and Tampa, USA.  2022.12 

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  • 苅籠泰彦, CIP法とFEMの組み合わせによる遡上波の新計算法に関する基礎的検討

    石川忠晴, 工藤健太郎, 中村恭志, 苅籠泰彦

    海岸工学講演会, 東京，2003年11月  2003.11 

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  • Soroban格子法に基づく浅水２次元自由水面流れの計算手法の開発

    中村恭志, 石川忠晴, 矢部孝, 滝沢研二

    水工学講演会, 札幌，2004年3月  2004.3 

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  • 重イオン慣性核融合にむけた高精度３次元爆縮流体解析コードの開発

    清水幸治, 中村恭志, Aieksandar Ogoyski, 佐々木徹, 染谷哲勇, 細川貴央, 川田重夫

    日本物理学会講演会(2002年秋季大会), 春日井市，2002年9月, Vol.57, No.2, pp.149-149  2002.9 

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  • レーザー・プラズマ相互作用に向けたMaxwell-Vlasovコードの構築

    下タ村真由美, 中村恭志, 宮内幸一, 川田重夫

    日本物理学会講演会(2002年秋季大会), 春日井市，2002年9月, Vol.57, No.2, pp.148-148  2002.9 

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  • 高強度レーザーに照射された薄膜からのイオンビーム生成

    岡崎信康, 中村恭志, 川田重夫

    日本物理学会第58回年会, 仙台，2003年3月, p.246  2003.3 

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  • 重イオン慣性核融合における高精度3次元縛縮流体解析コードの開発

    染谷哲勇, 中村恭志, 清水幸治, 細川貴央, Aleksandar Ogoyski, 佐々木徹, 川田重夫

    日本物理学会第58回年会, 仙台，2003年3月, p.246  2003.3 

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  • 重イオン慣性核融合におけるビーム電荷中和化と炉ガス中での不安定性に関する研究

    染谷哲勇, 中村恭志, Aleksandar Ogoyski, 佐々木淳, 川田重夫

    日本物理学会第57回年次大会, 草津市，2002年3月  2002.3 

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  • CIP法によるBoltzmann-Maxwell方程式の数値解析と衝突項直接積分に関する研究

    中村恭志, 内田好則, 下タ村真由美, 川田重夫

    日本物理学会第57回年次大会，草津市，2002年3月  2002.3 

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  • 分散問題解決環境（PSE）に向けたPSE要素モジュールの開発

    野中英隆, 寺元貴幸, 中村恭志, 北向亮治, 町出俊介, 早坂浩二, 川田重夫

    計算工学講演会, 東京，2002年5月, Vol.7, pp.99-102  2002.5 

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  • データベースを活用した分散授業支援システムの構築２

    寺元貴幸, 岡田正, 稲田英治, 齋藤智也, 中村恭志, 川田重夫

    計算工学講演会, 東京，2002年5月, Vol.7, pp.123-124  2002.5 

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  • 重イオン慣性核融合におけるビーム輸送と収束に関する研究

    染谷哲勇, 中村恭志, 佐々木淳, 川田重夫

    日本物理学会2001年秋季大会, 徳島，2001年9月, vol.2, pp.147  2001.9 

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  • 高次元位相空間における分布関数の高精度数値解法と衝突項直接積分

    中村恭志, 内田好則, 下タ村真由美, 川田重夫

    日本物理学会2001年秋季大会, 徳島，2001年9月, vol.2, pp.147  2001.9 

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  • 高強度超短パルスレーザーによる薄膜プラズマからの高エネルギー陽子ビーム生成の密度依存性に関する研究

    川田重夫, 中村恭志

    日本物理学会第57回年次大会, 草津市，2002年3月  2002.3 

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  • 高強度fsレーザー・薄膜相互作用による高エネルギーイオン生成, 電気学会プラズマ研究会

    中村恭志, 川田重夫

    宇都宮，2001年8月，電気学会研究会資料. PST, プラズマ研究会, 2001 (51) , pp.57-62  2001.8 

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  • CIP法による Maxwell-Vlasov コードの構築, 電気学会プラズマ研究会

    下タ村真由美, 中村恭志, 内田好則, 川田重夫

    電気学会プラズマ研究会，宇都宮，2001年8月，電気学会研究会資料. PST, プラズマ研究会, 2001 (51) , pp. 1-6  2001.8 

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  • 間接照射型重イオンビーム慣性核融合に向けた燃料ペレット爆縮不均一の緩和

    佐々木淳, 中村恭志, 染谷哲勇, 川田重夫

    電気学会プラズマ研究会，宇都宮，2001年8月，電気学会研究会資料. PST, プラズマ研究会, 2001 (51) , pp.39-44  2001.8 

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  • 重イオンビーム慣性核融合における輻射の爆縮不均一緩和効果に関する研究

    佐々木淳, 中村恭志, 清水幸治, 川田重夫

    日本物理学会2001年秋季大会, 徳島，2001年9月, vol.2, pp.145  2001.9 

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  • 人類社会の持続的発展における原子力エネルギー利用の役割に関する研究 II

    大川原剛治, 川田重夫, 中村恭志, 金田武司, 山田耕治, 竹田拡司

    エネルギー・資源学会第20回研究発表会, 東京, 2001年6月, pp.271-276  2001.6 

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  • レーザー・プラズマ相互作用に向けた衝突項の直接数値解法

    内田好則, 中村恭志, 下タ村真由美, 川田重夫

    電気学会プラズマ研究会，宇都宮，2001年8月，電気学会研究会資料. PST, プラズマ研究会, 2001 (51) , pp.69-74  2001.8 

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  • 重イオン慣性核融合におけるビーム輪送及び収束に関する研究

    染谷哲勇, 中村恭志, 佐々木淳, 川田重夫

    電気学会プラズマ研究会，宇都宮，2001年8月，電気学会研究会資料. PST, プラズマ研究会, 2001 (51) , pp.45-50  2001.8 

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  • 小川原湖の密度躍層付近における流動混合の構造について

    笹島悠達, 石川忠晴, 中村恭志, 鶴田泰士, 天野光歩, 遠藤真一

    水工学講演会, 広島，2008年3月  2008.3 

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  • コンピュータシミュレーションを用いた断層撓曲と断層パラメータの解明-立川断層を事例として-

    安藤広一, 山崎晴雄, 中村恭志

    日本第四紀学会講演会, 東京，2008年8月, Vol.38, pp.94-95  2008.8 

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  • チュニジア国Joumine貯水池の成層流動シミュレーションのための計算条件設定

    高比良翔, 中村恭志, 石川忠晴, 入江光輝, Jamila TARHOUNI, 小島崇

    水工学講演会, 松山, 2012年3月  2012.3 

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  • GPGPUを用いた波浪エネルギー平衡方程式数値解析モデルの開発と霞ヶ浦への適用

    石井冬彦, 石川忠晴, 中村恭志

    水工学講演会, 松山, 2012年3月  2012.3 

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  • ３次元貯水池数値流動モデル"TITech-WARM" の開発と釜房貯水池への適用

    中村恭志, 戸田真仁, 渡部一人, 石川忠晴

    水工学講演会, 松山, 2012年3月  2012.3 

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  • 非構造三角形格子に基づく津波数値解析の GPGPUによる高速化

    曾新翔, 赤穗良輔, 石川忠晴, 中村恭志

    水工学講演会, 松山, 2012年3月  2012.3 

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  • コンピュータシミュレーションを用いた断層橈曲と断層パラメータの解明-立川断層を事例として-

    安藤広一, 山崎晴雄, 中村恭志

    日本地震学会秋季大会, つくば, 2008年11月, p.72  2008.11 

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  • 松花湖の成層流動シミュレーションのための計算条件設定について

    小島崇, 何春光, 盛連喜, 石川忠晴, 中村恭志

    水工学講演会, 東京，2009年3月  2009.3 

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  • CIP-Soroban三次元流動モデルによる利根川感潮域塩水流動解析

    許暁飛, 中村恭志, 小林侑, 小島崇, 石川忠

    水工学講演会, 東京，2011年3月  2011.3 

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  • CIP-Soroban法に基づく汽水域3次元数値流動モデルの開発

    中村恭志, 石川忠晴

    水工学講演会, 東京，2011年3月  2011.3 

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  • 石垣島アンパル干潟の塩水流動特性について

    井上陽介, 石川忠晴, 中村恭志, 入江光輝

    第31回土木学会関東支部技術発表研究会, 東京，2004年3月  2004.3 

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  • 氷層内部状態を考慮した貯水池氷層モデルに関する基礎的研究

    賀達, 小島崇, 石川忠晴, 中村恭志

    水工学講演会, 広島，2008年3月  2008.3 

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  • CIP法を用いた大変形弾塑性数値解析モデルに関する基礎的研究

    山本裕子, 中村恭志

    第42回地盤工学研究発表会，名古屋，2007年7月，発表講演集 pp.845-846  2007.7 

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  • 土の締固めにおける物理機構解析に向けたCIP-DEM連成数値解析モデルの開発

    長野優羽, 中村恭志

    第42回地盤工学研究発表会，名古屋，2007年7月，発表講演集pp.423-424  2007.7 

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  • CIP-Soroban法に基づく鉛直二次元貯水池モデルの実水域への適用

    小島崇, 中村恭志, 石川忠晴

    土木学会第62回年次学術講演会, 広島，2007年9月, pp.421-422  2007.9 

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  • CIP-Soroban法を用いた鉛直二次元貯水池流動モデルの構築

    小島崇, 中村恭志, 石川忠晴

    第21回数値流体シンポジウム, 東京, 2007年12月, pp.1-5  2007.12 

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  • 境界条件を計算領域内部に設定する流体運動計算手法の開発

    工藤健太郎, 石川忠晴, 中村恭志

    水工学講演会, 札幌，2004年3月  2004.3 

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  • CIP-Soroban格子法による河道幅を考慮した汽水域二次元数値モデルの開発

    中村恭志, 小島崇, 石川忠晴

    水工学講演会, 京都，2005年3月  2005.3 

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  • CIP‐Soroban格子法に基づく貯水池鉛直二次元流動モデルの基礎的検討

    小島崇, 中村恭志, 石川忠晴

    土木学会第61回年次学術講演会, 草津市，2006年9月, pp. 575-576  2006.9 

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  • 水温成層を考慮した貯水池内流動解析に向けたCIP-Soroban法に基づく鉛直２次元数値流動モデルの開発

    小島崇, 中村恭志, 石川忠晴

    水工学講演会, 東京，2007年3月  2007.3 

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Awards

  • 河川基金助成事業 研究者・研究機関部門 国土交通大臣賞

    2026.8   河川環境管理財団   「救命胴衣の種類が河川流水中での水難事故の生存性に及ぼす影響の把握」

    中村恭志

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  • 第70回水工学講演会 アウトスタンディング・ディスカッション賞

    2026.3   土木学会  

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  • 指導学生が水工学論文奨励賞 受賞 （中村恭志は対象論文の責任著者・研究指導担当）

    2024.12   土木学会   「人体-流動連成数値解析による高所からの落水事故の傷害リスク評価」

    篠原裕幸,中村恭志

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  • 学術論文がFeatured Article (Journal’s Best) に選出

    2024.7   Physics of Fluids誌   「Dynamics of a wall-mounted flexible plate in oscillatory flows」

    Jian-tao Zhang, Takashi Nakamura

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  • Papers of the Year Award 受賞

    2020.5   Journal of Biomechanical Science and Engineering誌   「Development of a coupled human fluid numerical model for the evaluation of tsunami drowning hazards」

    Daiki AJIMA, Takashi NAKAMURA, Tatsuto ARAKI, Tetsunori INOUE, Akane KURISU

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  • 指導学生との共同発表がBest Poster Presentation Awardを受賞

    2019.9   The 4th International Symposium on Conservation and Management of Tropical Lakes   「Escherichia coli transport simulation in the Tonle Sap Great Lake using a two-dimensional hydraulic model accelerated by GPGPU」

    A. Kuwagaki, T. Nakamura, H. Fujii, S. Ly, S. Lun, S. Heng, S. Siev, Y. Fujihara, K. Hoshikawa, C. Peng, Y. Tanji, K. Miyanaga,T., Watanabe,C. Yoshimura

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  • 第60回水工学講演会 アウトスタンディング・ディスカッション賞

    2016.8   土木学会  

    中村恭志

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  • ダム工学会賞（論文賞）受賞

    2016.5   ダム工学会   「チュニジア国Joumine貯水池の土砂堆積過程に関する研究」

    石川忠晴, 王 明陽, 入江 光輝, 中村恭志

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  • 河川整備基金助成事業研究成果表彰 理事長賞 受賞

    2012.10   河川環境管理財団   「利根川下流河道における細粒底質の動態と質的変化に関する調査」

    石川忠晴, 渡邊眞紀子, 中村恭志

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  • The JACM Young Investigator Award 受賞

    2006.7   日本計算力学連合   「計算力学分野の顕著な業績及び研究を行った40才以下の研究者」

    中村恭志

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  • 優秀論文発表賞 受賞

    2001.3   電気学会   「高強度fsレーザー・薄膜相互作用による高エネルギーイオン生成」

    中村恭志

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  • 手島精一記念研究賞（博士論文賞）受賞

    2001.2   手島工業教育資金団   「超多次元保存型CIP法による位相空間ソルバーの開発」

    中村恭志

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Research Projects

  • 1991年雲仙・普賢岳での火砕流に巻き込まれた車両の外力計算

    2026.4 - 2027.3

    一般財団法人砂防・地すべり技術センター  研究開発助成 

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  • 救命胴衣の種類が河川流水中での水難事故の生存性に及ぼす影響の把握

    2025.4 - 2026.3

    公益財団法人河川財団  河川整備基金助成事業 

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  • New Benefit Evaluation for flood control project in continental large river bank aiming improvement of food productitivity

    Grant number：16KT0026  2016.7 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

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    Authorship：Coinvestigator(s) 

    Grant amount：\18460000 （ Direct Cost: \14200000 、 Indirect Cost：\4260000 ）

    A continental large river has a water resource potential for the improvement of agricultural productivity while frequent floods restrict the farmland development. Though flood control projects were proposed for such area, the current benefit measurement counts only the direct benefit such as the properties saved by the flood control. On the other hand, the indirect benefit that would be brought by the improvement of food self-sufficiency rate with extension of new farmland was ignored. Finally the flood control project was rejected. This study discussed about the revision of the cost-benefit analysis focusing on the following 2 points of view.(1)High resolution and high speed computational model of inundation, targeting the wide flood plain, was developed. Calculation efficiency was significantly improved. (2)Productivity and Demand analysis of rice in the study area quantifies the economical benefit by the self-sufficiency improvement following to the farmland development.

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  • トンレサップ湖における環境保全基盤の構築

    2015 - 2021

    科学技術振興機構  国際的な科学技術共同研究などの推進 SATREPS 

    吉村 千洋

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    Authorship：Coinvestigator(s) 

    湖沼水質の形成過程やリスクを理解し、水環境解析ツールを開発 トンレサップ湖は世界的に貴重な生態系で大切な水環境。しかし、水質の悪化や生物資源の減少などその環境が変化している。私たちはトンレサップ湖とその周辺を対象として、現地研究者と共同で湖の水理・水質モデル(水環境解析ツール)を開発し、健康リスクや生態系リスクに着目した環境保全案を示す。さらに、研究者、行政機関、市民が共同で湖沼環境を保全するための枠組み(水環境プラットフォーム)を構築する。 水環境解析ツールを活用し、湖沼環境保全の枠組みを構築 水環境解析ツールを活用することで、人口増加や気候変動などを想定して、健康リスクや生態系リスクを低減するための水環境保全案を示す。そして、このツールと水環境プラットフォームを組み合わせることで、トンレサップ湖さらにはメコン川流域の持続可能な発展に貢献する。

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    J-GLOBAL

  • Development of a practical method for river channel design using a quasi-3D flow simulation and stereo image analysis of aerial photographs

    Grant number：24560618  2012.4 - 2016.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Ishikawa Tadaharu, AKOH Ryosuke, NAKAMURA Takashi

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    Authorship：Collaborating Investigator(s) (not designated on Grant-in-Aid) 

    Grant amount：\5330000 （ Direct Cost: \4100000 、 Indirect Cost：\1230000 ）

    The design of the confluence is one of the most difficult aspects of the implementation of a compound channel which is widely adopted in rivers on alluvial plains. In this project, we proposed a practical method of flow analysis for the designing of confluence channels by combining the technique of stereo image analysis of the aerial photographs of flood flow and the quasi-3D shallow water simulation model with unstructured triangular mesh system. The drag force of the tree communities was also taken into consideration based on the results of a field survey.
    The method was applied to the flood flow occurred in the confluence of the Tone River and Watarase River. The stereo image analysis showed the detailed surface flow characteristics. The quasi-3D flow simulation reproduced the surface flow successfully, and revealed the three dimensional flow characteristics under the water surface which are useful for the design of river confluence.

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  • 利根川下流河道における細粒底質の動態と質的変化に関する調査

    2008.4 - 2011.3

    公益財団法人河川環境管理財団  河川整備基金助成事業 

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    Authorship：Coinvestigator(s) 

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  • 北上川汽水域におけるマルチスケール・リアルタイム流動シミュレータの開発

    2005.4 - 2006.3

    公益財団法人河川環境管理財団  河川整備基金助成事業 

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    Authorship：Principal investigator 

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  • 水環境評価に向けた湖沼など短フェッチ域波浪解析モデルの開発

    Grant number：17760135  2005 - 2007

    日本学術振興会  科学研究費助成事業  若手研究(B)

    中村 恭志

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    Authorship：Principal investigator 

    Grant amount：\2600000 （ Direct Cost: \2600000 ）

    エネルギー平衡モデル用いる湖沼波浪推算モデルを開発し、計算機クラスターによる高速・低計算負荷風波解析シミュレータを実現した。風波生成にDPモデルを使用することで並列効率の高い、並列波浪推算ソルバーを実装した。霞ヶ浦について、実地形条件を考慮した計算を実行した。現地観測により得られている波高空間分布と時間変動を良好に再現可能であることを確認し、湖沼等の水深が浅く短フェッチな水域においても開発されたモデルにより妥当な波浪推算が行えることを確認した。ソルバーの並列化により、空間解像度を500m程度と詳細にした場合でも、実時間の3割弱の計算時間で高速に解析可能となることを確認し、速報性と詳細性が重要となる波浪災害予報への適用可能性を確認できた。また波浪推算時に必要となる水域内風場の入力データ作成のため、MASCONモデルに基づき粗い気象データから局所風場を推定する支援プログラムを開発した。さらに近年予報精度が急速に向上している気象予報モデルを用いた風場推算の可能性についても検討を行った。現地観測結果との比較により、メソスケール気象モデル(WRFモデル)と国土数値情報データ(国土交通省提供)を組み合わせることで、霞ヶ浦における風場を十分再現しうることが確認できた。これにより、計測が困難である風場の現地観測を一切行わないでも、波浪推算を実行できる可能性が示された。開発した並列化シミュレーションコードはインターネットを通じて公開を行った。波浪シミュレーションコードに加え、入力条件である風場を気象データから推定する支援プログラム(MASCONモデル)も公開し、客観解析データなどの大局的な気象データなどを準備するだけで当該水域における波浪を利用者が解析可能となるようした。

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  • Plasma simulator on distributed computers and its application to microplasma studies

    Grant number：15075201  2003 - 2007

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Priority Areas

    KAWATA Shigeo, NAGASAWA Takeshi, NAKAMURA Takashi, YUGAMI Noboru, KIKUCHI Takashi

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    Authorship：Coinvestigator(s) 

    Grant amount：\34900000 （ Direct Cost: \34900000 ）

    In this research project, we have studied and developed a plasma simulator for microplasma simulations. In addition, we have tried to understand microplasma physics and to find a microplasma control method in the following research areas. We have also studied on laser particle acceleration, inertial fusion plasma confinement, radiation generation by laser produced plasma, etc by the microplasma simulator. By using the microplasma simulator users can perform simulations through a WEB browser on distributed computers. Without knowing detail information of the distributed computers users can submit their jobs and can retrieve results through the microplasma simulator. In the microplasma simulator an electromagnetic particle-in-cell code, a fluid code and a Vlasov code were also developed. In the laser electron acceleration a TEM (1,0)+(0,1) mode laser is employed to produce high-density short-pulse (atto second) electron beam. The pre-accelerated electors are trapped in transverse and compressed in longitudinal by the TEM (1,0)+(0,1) mode laser. An intense short pulse laser is employed to produce a collimated proton beam; in this study the intense short pulse laser illuminates a thin aluminum foil, which has many holes at the rear side of the foil target. By the tailored hole target a collimated proton beam was successfully produced. We have also proposed a new control method of laser-produced proton beam energy spectrum by employing an additional cover layer. The laser-produced collimated ion beam can be used for ion cancer therapy, material processing, etc. In a discharge study under water we found a photoionization is essentially important. A mm-radius microplasma jet was also produced for a fine material processing. We have also succeeded to produce a THz radiation by using a laser-illuminated transparent semiconductor.

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  • 多次元位相空間における分布関数の高精度数値解法と専用計算ボードの開発

    Grant number：13780380  2001 - 2003

    日本学術振興会  科学研究費助成事業  若手研究(B)

    中村 恭志

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    Authorship：Principal investigator 

    Grant amount：\1500000 （ Direct Cost: \1500000 ）

    前年度は取組むべき衝突項として荷電粒子系に対するFokker-Planck(FP)型衝突項を取り上げ、従来高計算負荷が障害となっていた直接解法の実現策として、その高速演算を実現しうる専用計算機の設計・開発、および専用計算機による演算高速化の有効性について検証を行った。多重積分専用パイプフインを大規模Programmable Logic Device(PLD)上へ実装した実証機による一連の検証から、複数PLDの使用によるパイプライン多本化でおよそ10GFLOPS程度まで衝突項演算を高速化可能である見通しを得た。本年度は、前年度で示された結果を基とし、開発された専用計算ボードと組み合わされる、非衝突過程解析に供されるVlasov方程式の数値解析コードの開発が進められた。高次元位相空間内での解析となるVlasov方程式の数値解析には高速演算の計算機環境が必須となる。これを可能とする方法として、汎用計算機による計算機クラスタに着目し、同システム上で実行される並列化Vlasovコードの構築を行った。同コードはConstrained Interpolation Profile(CIP)法に基づいて開発が行われ、その過程において既存のCIP法における補間方法の改良・提案が行われた。さらに、開発された並列Vlasovコードの相対論的多粒子系への拡張を行い、Maxwellコードの組込みにより粒子・電磁界相互作用等の複雑問題への適用が可能となった。開発されたVlasovコードは非衝突過程が支配的な物理系として電子の電磁場加速である逆制動放射加速を例題として精度面での検証が行われ、開発された並列化コードが良好な精度と効率を持つことが確認された。専用計算機による衝突過程の高速解法と本年度開発された計算機クラスタシステムを使用したVlasov方程式の数値解析手法により、従来には無い高精度な衝突過程をも含めた分布関数の数値解析手段が実現された。

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  • Behavior of fine sediment and its effect on the formation of hypoxia in estuaries.

    Grant number：13450202  2001 - 2003

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    ISHIKAWA Tadaharu, SUZUKI Tomoyuki, QIAN Xin, NAKAMURA Takashi, YOKOYAMA Katsuhide

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    Authorship：Coinvestigator(s)  Grant type：Competitive

    In conventional manuals for river improvement works, in which ordinary river channels are taken as a standard object of planning, do not refer to the special aspects of the estuarine part of downstream reaches. In this research, aiming the future reform of the standard of river improvement works, hydraulic factors related to the fine sedimentation in estuaries are investigated in downstream reaches of some rivers whose hydraulic characteristics are different from one another.
    In Tone River Estuary, suspension of fine sediment was measured in the salt wedge by using some up-to-date measurement techniques including acoustic turbulence measurement, and the effect of fine sediment on the formation of hypoxia in the head of salt wedge was estimated. In Oppa Bay, where Kitakami River flows in, the deterioration of bay water by the effect of river freshets containing a lot of fine sediment was investigated through field observation and satellite image analysis. In Takase River Estuary, the effect of bed topography, especially of shallow area made by the deposition of fine sediment, on the salt water intrusion was estimated by field measurements and numerical simulation.

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  • パルスパワーによる慣性核融合の研究 (米国University of California, Department of Applied Science at Lawrence Livermore National Laboratoryに研究員として派遣)

    2000.8 - 2000.9

    日本学術振興会  日米科学技術協力事業核融合分野研究者派遣事業 

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    Authorship：Principal investigator 

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Teaching Experience

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Social Activities

  • 水難事故防止の啓発動画作成

    Role(s)： Advisor,　Informant,　Contribution

    河川財団YouTubeチャンネル  川底の形状の，わずかな変化でも流れが複雑に【ライフジャケット無し/有りの場合】･･･流体力学による科学的なシミュレーション  2025

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    Type：Internet

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  • 水難事故防止の啓発動画作成

    Role(s)： Advisor,　Informant,　Contribution

    河川財団YouTubeチャンネル  急流で水中の障害物に捕捉されると【ボディエントラップメント】･･･流体力学による科学的なシミュレーション  2025

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    Type：Internet

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  • 水難事故防止の啓発動画作成

    Role(s)： Advisor,　Informant,　Contribution

    河川財団YouTubeチャンネル  流れが速い状況でつい立とうとしてしまい，川底の岩などに足が挟まってしまうと…【フット・エントラップメント】･･･流体力学による科学的なシミュレーション  2025

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    Type：Internet

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  • 警察捜査への技術協力

    Role(s)： Informant,　Report writing

    2024

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    Type：Investigation, survey

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  • 東京都北区 環境大学 一般向け講座 大気・土壌・海洋汚染コース 講師

    Role(s)： Lecturer

    東京都 北区  環境大学 一般向け講座  2011

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    Type：Lecture

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  • 公開講座「ITサマーキャンプ（後援：栃木県、電気学会栃木支所）」

    Role(s)： Lecturer,　Planner,　Demonstrator

    宇都宮大学 工学部  ITサマーキャンプ  2001

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    Type：Seminar, workshop

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