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Elucidation of phenomena and numerical analysis of the viscous flow including free surface.

Research Project

Project/Area Number 05402054
Research Category

Grant-in-Aid for General Scientific Research (A)

Allocation TypeSingle-year Grants
Research Field 船舶工学
Research InstitutionUNIVERSITY OF TOKYO

Principal Investigator

MIYATA Hideaki (1994)  Univ.of Tokyo, Faculty of engineering, Professor, 工学部, 教授 (70111474)

梶谷 尚 (1993)  東京大学, 工学部, 教授 (80010693)

Co-Investigator(Kenkyū-buntansha) YAMAGUCHI Hajime  Univ.of Tokyo, Faculty of engineering, assist.Professor, 工学部, 助教授 (20166622)
KATO Hiroharu  Univ.of Tokyo, Faculty of engineering, Professor, 工学部, 教授 (00010695)
KAJITANI Hisashi  Kumamoto Institute of Technology, Faculty of engineering, Professor, 工学部, 教授 (80010693)
藤野 正隆  東京大学, 工学部, 教授 (10010787)
中武 一明  九州大学, 工学部, 教授 (70037761)
宮田 秀明  東京大学, 工学部, 助教授 (70111474)
Project Period (FY) 1993 – 1994
Project Status Completed (Fiscal Year 1994)
Budget Amount *help
¥20,500,000 (Direct Cost: ¥20,500,000)
Fiscal Year 1994: ¥8,100,000 (Direct Cost: ¥8,100,000)
Fiscal Year 1993: ¥12,400,000 (Direct Cost: ¥12,400,000)
Keywordsfinite-difference method / finite-volume method / free-surface / viscous flow / wave breaking / ship / offshore structure / 渦 / 剥離 / 乱流
Research Abstract

In the fields of naval architecture and ocean engineering, there are many problems that contains both free-surface and body boundary. On these boundaries fluid motions are generated and they cause fluid-dynamical forces. The elucidation of the phenomena and estimation of force by computational fluid-dynamical techniques are one of the most important problems to be attacked.
Since no global technique that can cope with all of these motions cannot be developed at present, some kinds of techniques suitable to respective problems must be developed.
In this study two techniques are developed. One is a technique composed in the framework of rectangular inflexible grid system by use of density function method for the treatment of the free surface. The other is one in the frameworks of boundary fitted coordinate grid system. For the 3D wave breaking phenomena and other nonlinear free surface phenomena the former is most suitable and for the gentle viscous phenomena near the boundaries the latter will show its effectiveness.
The availability of these methods are demonstrated by the simulation of nonlinear flows about ships and ocean structures.

Report

(3 results)
  • 1994 Annual Research Report   Final Research Report Summary
  • 1993 Annual Research Report
  • Research Products

    (21 results)

All Other

All Publications (21 results)

  • [Publications] 宮田秀明、朱明、渡辺修: "Numerical study on a viscous flow with free-surface waves about a ship in steady straight course by a finite-volume method." Journal of Ship Research. 36-4. 332-345 (1992)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 朴鐘千、朱明、宮田秀明: "On the accuracy of numerical wave making techniques." 日本造船学会論文集. 173. 35-44 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 川村隆文、宮田秀明: "Use of density-function technique for the simulation of nonlinear ship waves." Proc.Workshop on Wave Resistance and Viscous Flow.176. 49-70 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 朴鐘千、宮田秀明: "大波中の海洋構造物まわりの波崩れを含んだ三次元非線形波動のシミュレーション" 日本造船学会論文集. 181. 31-42 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 朴鐘千、宮田秀明: "Numerical simulation of the nonlinear free-surface flow caused by breaking waves." Free-Surface Turbulence. (発表予定). 155-168 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 金井亮浩、宮田秀明: "楔型モデルまわりに発生する自由表面衝撃波の数値流体力学的構造解明" 日本造船学会論文集. (発表予定). (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] H.Miyata, M.Zhu and O.watanabe: "Numerical study on a viscous flow with free-surface waves about a ship in steady straight course by a finite-volume method." Journal of Ship Research. 36-4. 332-345 (1992)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] J.C.Park, M.Zhu and H.Miyata: "On the accuracy of numerical wave making techniques." J.Soc.Nav.Archit.173. 35-44 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] T.Kawamura, H.Miyata: "Use of density-function technique for the simulation of nonlinear ship waves." Proc.Workshop on Wave Resistance and Viscous Flow. 49-70 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] J.C.Park, H.Miyata: " Numerical simulation of 3D breaking wave motions about an offshore structure under a severe sea condition." J.Soc.Nav.Archit.176. 31-42 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] J.C.Park, H.Miyata: "Numerical simulation of the nonlinear free-surface flow caused by breaking waves." Free-Surface Turbulence. 181. 155-168 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] A.Kanai, H.Miyata: "Elucidation of the structure of a free-surface shock wave around a wedge model by Finite-Difference Method." J.Soc.Nav.Archit.(to appear). (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1994 Final Research Report Summary
  • [Publications] 朴鐘千,宮田 秀明: "有限差分法による2次元及び3次元波崩れの数値シミュレーション" 日本造船学会論文集. 175. 11-24 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 川村 隆文,宮田 秀明: "Simulation of nonlinear ship flows by density-function method." 日本造船学会論文集. 176. 1-10 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 田中 茂,宮田 秀明: "補助翼を有する非定常水中翼の数値シミュレーション" 日本造船学会論文集. 176. 19-30 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 朴鐘千、宮田 秀明: "大波中の海洋構造物まわりの波崩れを含んだ三次元非線形波動のシミュレーション" 日本造船学会論文集. 176. 31-42 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 大森 拓也,藤野 正隆: "肥大船の操縦運動中の流場に関する研究(第一報:斜航状態)" 日本造船学会論文集. 176. 241-250 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 金井 亮浩,宮田 秀明: "楔型モデルまわりに発生する自由表面衝撃波の数値流体力学的構造解明" 日本造船学会論文集. (発売予定). (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] Takuya Ohmori: "Numerical Simulation of Viscous Flow about a Slender Hull in Straight and Oblique Courses" Hull Form Design and Flow Phenomena,Inha Univ.61-80 (1992)

    • Related Report
      1993 Annual Research Report
  • [Publications] Takuya Ohmori: "Oblique Tow Simulation by a Finite-Volume" 日本造船学会論文集. 173. 35-44 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] Ming Zhu: "Verification of the Viscous Flow-Field Simulation for Practical Hull Forms by a Finite Volume Method" Proc.6th Inter.Conf.Numerical Ship Hydrodynamics. 9.12-9.29 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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