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Numerical Ocean Model Using Boundary Fitted Coordinate System

Research Project

Project/Area Number 15560693
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Naval and maritime engineering
Research InstitutionOsaka University

Principal Investigator

TODA Yasuyuki  Osaka Univ., Dept.of Global Architecture, Professor, 大学院・工学研究科, 教授 (20172166)

Project Period (FY) 2003 – 2005
Project Status Completed (Fiscal Year 2005)
Budget Amount *help
¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2005: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2004: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 2003: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsOcean Model / Boundary Fitted Coordinate / The Small Structure / Body Force Distribution / Full 3D computation / MEC Model / Gravity Current / 屈折率整合法 / 重量流小型実験 / 境界適合座標 / 人口構造物 / マルチブロック / 並列化 / MECモデル / 体積力分布 / Full-3D / 影響評価
Research Abstract

Numerical ocean model using boundary fitted coordinate system has been investigated to treat the complex geometry around the bay and the ocean bottom. Considering the complex geometry and the parallel computing, the block decomposition was used. I those results, the continuity of flow at block boundary was good and the CPU time could be reduced. The fine grid near the free surface was tested using iteration methods. The results were promising, but the small relaxation parameter was needed. It is not good for practical computation.
MEC model, in which the hydrostatic approximation is used in large domain and Full-3D computation is used in small domain, was used to estimate the effect of the small artificial structure in the narrow straight. The body force distribution method is used in Full 3D domain. The body force distribution was estimated from the theory or Full-3D CFD computation around structure in uniform flow The results show that the small current generator or upwelling device give the large effect to the coastal flow. The online Version of MEC model was developed. Many users can use MEC model in web blowser.
The gravity current was investigated to find the good model in ocean model.

Report

(4 results)
  • 2005 Annual Research Report   Final Research Report Summary
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (23 results)

All 2005 2004 2003 Other

All Journal Article (21 results) Publications (2 results)

  • [Journal Article] 重力流の密度場・速度場同時計測2005

    • Author(s)
      真田有吾, 戸田保幸, 濱地佐知子, 鈴木敏夫
    • Journal Title

      関西造船協会論文集 第243号

      Pages: 145-151

    • NAID

      10012625086

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Flow Field Visualization inside the Head of Gravity Currents Using Refractive Index Matching Technique2005

    • Author(s)
      Y.Sanada, K.Okumoto, Y.Toda
    • Journal Title

      The 2^<nd> Joint Japan/Korea Workshop on Marine Environmental Engineering

      Pages: 231-244

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 重力流先端内部の可視化2005

    • Author(s)
      真田有吾, 岡本圭祐, 戸田保幸, 渋谷岳大
    • Journal Title

      可視化情報学会誌 Vol.25

      Pages: 35-38

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 非定常密度場計測手法の開発-密度場再構成手法についての検討2005

    • Author(s)
      真田有吾, 戸田保幸, 濱地佐知子
    • Journal Title

      日本船舶海洋工学講演会論文集 第2号

      Pages: 57-63

    • NAID

      110004101648

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Simultaneous Measurement of Velocity and Density Fields of Gravity Current2005

    • Journal Title

      J.Kansai Soc N.A., Japan No.243

      Pages: 145-151

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Flow Field Visualization inside the Head of Gravity Currents Using Refractive Index Matching Technique2005

    • Journal Title

      The 2^<st> Joint Korea/Workhop on Marine Environmental Engineering

      Pages: 231-244

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Journal of The Visualization Society of Japan2005

    • Author(s)
      Visualization of Flow around head of gravity current
    • Journal Title

      Vol.25 No.2

      Pages: 35-38

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Flow Field Visualization the Head of Gravity Currents Using Refractive Index Matching Technique2005

    • Author(s)
      Y.Sanada, K.Okamoto, Y.Toda
    • Journal Title

      Proc.of The 2^<nd> Joint Japan/Korea Workshop on Marine Environmental Engineering

      Pages: 231-244

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 重力流先端内部の可視化2005

    • Author(s)
      真田有吾, 岡本圭祐, 戸田保幸, 渋谷岳大
    • Journal Title

      可視化情報学会誌 Vol.25 Suppl.No.2

      Pages: 35-38

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 非定常密度場計測手法の開発-密度場再構成手法についての検討-2005

    • Author(s)
      真田有吾, 戸田保幸, 濱地佐知子
    • Journal Title

      日本船舶海洋工学会論文集 第2号

      Pages: 57-63

    • NAID

      110004101648

    • Related Report
      2005 Annual Research Report
  • [Journal Article] The Development of the Online Computation and Online Visualization System of the ME C-Model2004

    • Author(s)
      Erwandi, Y.Toda, H.Asakura, T.Wayama
    • Journal Title

      関西造船協会論文集 241

      Pages: 211-219

    • NAID

      110003860495

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A Fundamental Study on Instability of Stratified Shear Flow in Gravity Current2004

    • Author(s)
      Y.Sanada, Y.Toda, T.Nagasawa, T.Shibuya
    • Journal Title

      Proceedings of the 2nd Asia Pacific Workshop on Marine Hydrodynamics

      Pages: 151-156

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Velocity and Density Field Measurement of Gravity Current using PIV and Refractometry Techniques2004

    • Author(s)
      Y.Sanada, Y.Toda, T.Suzuki
    • Journal Title

      Proceedings of the 2nd Asia Pacific Workshop on Marine Hydrodynamics

      Pages: 157-161

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Integration of MEC Full-3D Model to MEC Online System2004

    • Author(s)
      Erwandi, Y.Toda, H.Asakura
    • Journal Title

      MECモデルワークショップ 第5回

      Pages: 29-39

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] 物体影響をFull-3D領域の体積力分布により表現する方法の試計算2004

    • Author(s)
      戸田保幸, エルワンディ, 西岡康二
    • Journal Title

      MECモデルワークショップ 第5回

      Pages: 73-76

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] A Fundamental Study on Instability of Stratified Shear Flow in Gravity Current2004

    • Journal Title

      Proceedings of the 2nd Asia Pacific Workshop on Marine Hydrodynamics, Busan, Korea

      Pages: 151-156

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] Integration of MEC Full-3D Model to MEC Online System2004

    • Author(s)
      Erwandi, Y.Toda, H.Asakura
    • Journal Title

      MECモデルワークショップ(題5回)テキスト (CD-ROM)

      Pages: 29-39

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 物体影響をFull-3D領域の体積力分布により表現する方法の試計算2004

    • Author(s)
      戸田保幸, エルワンディ, 西岡康二
    • Journal Title

      MECモデルワークショップ(題5回)テキスト (CD-ROM)

      Pages: 73-76

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 体積力分布で物体を表現した簡単な例題2003

    • Author(s)
      戸田保幸, エルワンディ
    • Journal Title

      ECモデルワークショップ 第4回

      Pages: 45-50

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] The Online Version of MEC Model2003

    • Author(s)
      Erwandi, Y.Toda, H.Asakura, Y.Iwata.T.Wayama
    • Journal Title

      Proceedings of the 1st Joint Korea/Japan Workshop on Marine Environmental Engineering

      Pages: 233-233

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Journal Article] MEC Model Computation Using Body Force Distribution in Full-3D region2003

    • Journal Title

      The 4^<th> Workshop on MEC Ocean Model

      Pages: 45-50

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2005 Final Research Report Summary
  • [Publications] Erwandi, Y.Toda et al.: "The Online Version of the MEC Model"The 1^<st> Joint Korea/Japan Workshop on Marine Environmental Engineering KRISO/KORDI, Daejeon, Republic of Korea. 233-244 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Erwandi, Y.Toda et al.: "The Development of the Online Computation and Online Visualization System of the MEC-Model"関西造船協会論文集. 第241号. (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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