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Research on Numerical, Experimental and Method on Nonlinear

Research Project

Project/Area Number 13450403
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 船舶工学
Research InstitutionOsaka University

Principal Investigator

NAITO Shigeru  Osaka Univ., Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (20093437)

Co-Investigator(Kenkyū-buntansha) NTANIZAWA Katsuji  National Maritime Research Institute, Head of the Group, 耐航・復元性能研究グループ, 研究グループ長
MINOURA Munehiko  Osaka Univ., Graduate School of Engineering, Assistant, 大学院・工学研究科, 助手 (30294044)
TAKAGI Ken  Osaka Univ., Graduate School of Engineering, Assoc.Professor, 大学院・工学研究科, 助教授 (90183433)
KIHARA Hajime  National Defense Academy, Lecturer, 機械システム工学科, 助手
NOZAWA Kazuo  Osaka Univ., Graduate School of Engineering, Lecturer, 大学院・工学研究科, 講師 (10304023)
Project Period (FY) 2001 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥16,500,000 (Direct Cost: ¥16,500,000)
Fiscal Year 2003: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2002: ¥5,800,000 (Direct Cost: ¥5,800,000)
Fiscal Year 2001: ¥6,600,000 (Direct Cost: ¥6,600,000)
KeywordsParticle Method / Strong Nonlinearity / Hydrodynamic Wave Force / Pressure / Time-Space Mean Value / Impulse / Large Amplitude Motion of Floating Body / Deck Wetness / Impulsive Force / 強非線形 / 浮体の大振動幅動揺
Research Abstract

The following is research conclusions in three-year research period.
1.The effectiveness of MPS method is shown by comparison between experiments and calculations. We ourselves confirmed with experiments that MPS method can explain strong nonlinear impulsive phenomena, for example slamming and deck wetness.
2.MPS method needs the enormously computational times. To solve this difficulty, we have developed two subjects. The first one is that for dividing calculation fluid field a wave absorbing system equipped with at a boundary of a calculation fluid field is developed. The second one is that to reduce computation times, w e completed parallel computational scheme. As a result we can make a new system that refraction waves are not in calculation fluid field.
3.We expand the MPS computer code to 3-dimensional program, therefore we can make 3 dimensional nonlinear phenomena clear.
4.By using it, we can calculate hydrodynamic force acting on ships with advance velocity. We showed some numerical examples on subjects. Although until now we've not been able to calculate porpoising phenomenon, with this MPS method we can calculate the phenomena.
5.When we calculate hydrodynamic force acting on obstacles, the results have an unreasonable high frequency fluctuation. To decrease this fluctuation we introduced an auxiliary equation. As a result, the fluctuation can be reduced. We can open the new perspective to calculate nonlinear hydrodynamic forces acting on a body with high accuracy.
6.To distribute the MPS method including our new developed results, we submitted papers, attended the international and domestic conferences and discussed on it. From all over the world we got discussions, questions on the new method.

Report

(4 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • 2001 Annual Research Report
  • Research Products

    (37 results)

All Other

All Publications (37 results)

  • [Publications] 末吉 誠, 内藤 林: "粒子法による数値計算において圧力振動を軽減する補助計算手法について"関西造船協会誌. 第242号(印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 末吉 誠, 内藤 林: "粒子法による流体の強非線形現象に関する大規模3次元計算-PCクラスタ上での百万点超の粒子数に対する並列処理-"関西造船協会誌. 第241号(印刷中). (2004)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 内藤 林, 末吉 誠, 大橋俊之: "小計算領域における粒子法計算に関する研究"関西造船協会誌. 第240号. 109-114 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 末吉 誠, 内藤 林: "粒子法による強非線形流体現象の研究(その3)-水波と浮体運動の数値シミュレーション-"関西造船協会誌. 第239号. 81-86 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Makoto Sueyoshi, Shigeru Naito: "A Numerical Study of Violent, Free Surface Problems with Particle Method for Marine Engineering Problems"Proceedings of 8^<th> International Conference on Numerical Ship Hydrodynamics. 330-339 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 内藤 林, 末吉 誠, 大橋俊之: "狭い領域で粒子法計算を可能にする一つの方法"九州大学応用力学研究集会「移動境界とその周りの流れ解析」論文集. 82-85 (2003)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shigeru Naito, Makoto Sueyoshi: "A Numerical Analysis of Violent Free Surface Flow by particle Method"Proc.of 5^<th> Pacific/Asia Offshore Mechanics Symposium. 219-226 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Makoto Sueyoshi, Shigeru Naito: "A Numerical Study of Very Large Motion of Floating Body by Particle Method"Proc.of Asia Pacific Workshop on Marine Hydrodynamics. 146-150 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shigeru Naito, Makoto Sueyoshi: "A Numerical Study on Complicated Motions of Floating Bodies"Proc.of 6^<th> International Ship Stability Workshop. http://web02.webb-institute.edu/stabihty (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 末吉 誠, 内藤 林: "粒子法による強非線形流体現象の研究(その2)-2次元流体力-"関西造船協会誌. 第237号. 181-186 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Makoto Sueyoshi, Shigeru Naito: "Application of MPS Method to Violent Free Surface Problems on Marine Engineering"Prof.of 8^<th> Symposium on Nonlinear Free-Surface Flows. 53-55 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 末吉 誠, 内藤 林: "粒子法による強非線形流体現象の研究(その1)-2次元問題-"関西造船協会誌. 第236号. 191-198 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] Shigeru Naito, Makoto Sueyoshi: "A Numerical Analysis of Violent Free Surface Flow on Flooded Car Deck Using Particle Method"Proc.of 5^<th> International Workshop on Stability & Operational Safety of Ships. 5.1.1-5.1.6 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "Reduction of Numerical Fluctuation of Pressure Obtained by MPS Method -Introduction of Auxiliary Calculation-"Journal of Kansai Society of Naval Architects of Japan (Presenting at the Spring Meeting). 242. (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "3Dimensional Simulation of Nonlinear Fluid Problem by Particle Method -Over One Million Particles Parallel Computing on PC Cluster-"Journal of Kansai Society of Naval Architects of Japan. 241 (Printing). (2004)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Naito, M.Sueyoshi, T.Ohashi: "Study on Particle Method with Small Size Calculation Domain"Journal of Kansai Society of Naval Architects of Japan. 240. 109-114 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "A Study of Nonlinear Fluid Phenomena with Particle Method (part3) -Waves and Floating Body Simulation"Journal of Kansai Society of Naval Architects of Japan. 239. 81-86 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "A Numerical Study of Violent, Free Surface Problems With Particle Method for Marine Engineering Problems"Proceedings of 8^<th> International Conference on Numerical Ship Hydrodynamics. 330-339 (2003)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Naito, M.Sueyoshi: "A Numerical Analysis of Violent Free Surface Flow by Particle Method"Proceedings of 5^<th> Pacific/Asia Offshore Mechanics Symposium. 219-226 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Naito, M.Sueyoshi: "A Numerical Study on Complicated Motions of Floating Bodies"Proc. of 6^<th> International Ship Stability Workshop (http://web02.webb-institute.edu/stability/, 2002).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "Applications of MPS Method to Violent Free Surface Problems on Marine Engineering"Proceedings of 8^<th> Symposium on Nonlinear Free-Surface Flows. 53-55 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "A Numerical Study of Very Large Motion of Floating Body by Particle Method"Proc. of Asia Pacific Workshop on Marine Hydrodynamics. 146-150 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "A Study of Nonlinear Fluid Phenomena with Particle Method (part2) -Two Dimensional Hydrodynamic Force-"Journal of Kansai Society of Naval Architects of Japan. 237. 181-186 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] M.Sueyoshi, S.Naito: "A Study of Nonlinear Fluid Phenomena with Particle Method (part1)-Two Dimensional Problems-"Journal of Kansai Society of Naval Architects of Japan. 236. 191-198 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] S.Naito, M.Sueyoshi: "A Numerical Analysis of Violent Free Surface Flow on Flooded Car Deck Using Particle Method"Proc. of the 5^<th> Int'l Workshop on Stability & Operational Safety of Ships. 5.1.1-5.1.6 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2003 Final Research Report Summary
  • [Publications] 内藤 林, 末吉誠, 大橋俊之: "狭い領域で粒子法計算を可能にする一つの方法"九州大学応用力学研究集会「移動境界とその周りの流れ解析」論文集. 82-85 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Makoto Sueyoshi, Shigeru Naito: "A Numerical Study of Violent, Free Surface Problems with Particle Method for Marine Engineering Problems"Proceedings of 8^<th> International Conference on Numerical Ship Hydrodynamics. 300-339 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 末吉 誠, 内藤 林: "粒子法による強非線形流体現象の研究(その3)-水波と浮体運動の数値シミュレーション-"関西造船協会誌. 第239号. 81-86 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 内藤 林, 末吉誠, 大橋俊之: "小計算機における粒子法計算に関する研究"関西造船協会誌. 第240号. 109-114 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 末吉 誠, 内藤 林: "粒子法による流体の強非線形流体現象に関する大規模3次元計算-PCクラスタ上での百万点超の粒子数に対する並列処理-"関西造船協会誌. 第241号(印刷中). (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 末吉 誠: "粒子法による強非線形流体現象の研究(その2)-2次元流体力-"関西造船協会誌. 第237号. 181-186 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Shigeru Naito: "A Numerical Study on Complicated Motions of Floating Bodies"http://web02.webb-institute.edu/stability/ Proc. of 6^<th> International Ship Stability Workshop. (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Shigeru Naito: "A Numerical Analysis of Violent Free Surface Flow by Particle Method"Proc. of 5^<th> Pacific/Asia Offshore Mechanics Symposium. 219-226 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Makoto Sueyoshi: "A Numerical Study of Very Large Motion of Floating Body by Practicle Method"Proc. of Asia/Pacific Workshop on Marine Hydrodynamics. 146-150 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] Shigeru NAITO, Makoto SUEYOSHI: "A Numerical Analysis of Violent Free Surface Flow on Flooded Car Deck using Particle Method"Proc. of 5^<th> International Workshop -Stability and Operation-al Safety of Ships. 5.1.1-5.1.6 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 末吉 誠, 内藤 林: "粒子法による強非線形流体現象の研究(その1)-2次元問題-"関西造船協会論文集. 236. 191-198 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] Makoto SUEYOSHI, Shigeru NAITO: "A Study of Nonlinear Fluid Phenomena with Particle Method(part 1)-Two Demensional Problems-"Asia Pacific Workshop on Marine Hydrodynamics. (発売予定(2002・05月)). (2002)

    • Related Report
      2001 Annual Research Report

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Published: 2001-04-01   Modified: 2016-04-21  

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