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Study on Computational Method of Predicting Ship Viscous Flow

Research Project

Project/Area Number 01550355
Research Category

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

Allocation TypeSingle-year Grants
Research Field 船舶抵抗・運動性能・計画
Research InstitutionUniversity of Osaka Prefecture

Principal Investigator

HIMENO Yoji  Univ. of Osaka Prefecture, Faculty of Engineering, Professor, 工学部, 教授 (50081394)

Co-Investigator(Kenkyū-buntansha) TAKAMATSU Kenichiro  Ditto, Assistant, 工学部, 助手 (10081390)
NISHO Shigeru  Ditto, Assistant, 工学部, 助手 (30208136)
BABA Nobuhiro  Ditoo, Lecturer, 工学部, 講師 (10198947)
HIRANO Susumu  Ditto, Lecturer, 工学部, 講師 (70081388)
奥野 武俊  大阪府立大学, 工学部, 助教授 (60081395)
Project Period (FY) 1989 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1990: ¥200,000 (Direct Cost: ¥200,000)
Fiscal Year 1989: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsViscous Flow / Computation / CFD / Minimum Drag / Tidal Current / Flow Separation / 最小低抗 / 数値流体力学 / 船体まわりの流れ
Research Abstract

The final goal of the present research is to clarify the nature of the viscous flow fields around a ship hull associated with complicated three-dimensional flow separation, by applying some methods of computational fluid dynamics. For this purpose the present project has aimed to develop computational schemes, to carry out measurements of flow and forces, and then to clarify the ship viscous flow by use of the computational methods.
In the first year discussions were made on the validity of existing numerical schemes of solving Napier-Stokes equation, discretization methods, computational grids, and methods of solving pressure equation, in order to obtain reasonable methods.
The second year, i. e., the final year is devoted to make trial computations on several flow problems for examining the validity of the methods developed. The first trial is an application of the methods to compute an optimal body shape with minimum viscous resistance in two-dimensional plane. The scheme is associated with an nonlinear programming technique. The body shape solved has a lens shape with sharp corners at both ends. The next case is applied to a problem of current flow in Osaka Bay, by which an large scale vortex motion near Akashi channel is simulated. The final trial computation is applied to the flow around a circular cylinder with varying diameter in chord direction. A typical three-dimensional pattern of unsteady flow separation is obtained showing a similar nature to the flow around ship hull.
Measurements of hydrodynamic forces are also made in the second year, in which an analysis of measurement uncertainty is applied to the resistance test of a ship model.
Although these results are not directly related to the ship viscous flow, it is certain that they offer firm basis of treating the fundamental mechanism of the viscous flow around ship hull in near future.

Report

(3 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 田辺 尚紀、姫野 洋司: "2次元NーS方程式の数値解法スキ-ムの検討" 関西造船協会誌. 212. 57-65 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 田辺 尚紀、 姫野 洋司, 馬場 信弘、 上原 昇: "ナヴィエスト-クス方程式の数値解を用いた非線形計画法による物体形状の最適化(第1報)" 関西造船協会誌. 214. 27-37 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 木村 茂、 馬場 信弘, 姫野 洋司: "有限体積法による湾内流の計算とその制御の可能性" 関西造船協会誌. 214. 129-138 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 姫野 洋司、西尾 茂, 高松 健一郎: "抵抗試験における不確かさ解析の応用" 関西造船協会誌. 214. 39-47 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 山本 久一、馬場 信弘, 姫野 洋助、和田 哲: "柱体からの非定常3次元剥離に関する数値的研究" 関西造船協会誌. 215. (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] N. Tanabe and Y. Himeno: "Study on Numerical Solution Schemes for Two-Dimensional Navier-Stokes Equation" Journal of Kansai Society of Naval Architects, Japan. No. 212. 57-65 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] N. Tanabe, Y. Himeno, N. Baba, and N. Uehara: "Optimization of Body Profiles by Nonlinear Programming Based on Numerical Navier-Stokes Solutions" Journal of Kansai Society of Naval Architects, Japan. No. 214. 27-37 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] S. Kimura, N. Baba, and Y. Himeno: "Computation of Bay Currents and Its Possibility of Flow Control" Journal of Kansai Society of Naval Architects, Japan. No. 214. 129-138 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] Y. Himeno, S. Nishio, and K. Takamatsu: "Application of Uncertainty Analysis for Resistance Test" Journal of Kansai Society of Naval Architects, Japan. No. 214. 39-47 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] K. Yamamoto, N. Baba, Y. Himeno, and T. Wada: "Numerical Study of Unsteady Three-Dimensional Separation from a Cylinder" Journal of Kansai Society of Naval Architects, Japan. No. 215. (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 田辺 尚紀、姫野 洋司、馬場 信弘、上原 昇: "ナヴィエスト-クス方程式の数値解を用いた非線形計画法による物体形状の最適化(第1報)" 関西造船協会誌. 214. 27-37 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 木村 茂、馬場 信弘、姫野 洋司: "有限体積法による湾内流の計算とその制御の可能性" 関西造船協会誌. 214. 129-138 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 姫野 洋司、西尾 茂、高松 健一郎: "低抗試験における不確かさ解析の応用" 関西造船協会誌. 214. 39-47 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] 山本 久一、馬場 信弘、姫野 洋司、和田 哲: "柱体からの非定常3次元剥離に関する数値的研究" 関西造船協会誌. 215. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 田辺尚紀外: "2次元N-S方程式の数値解法スキ-ムの検討" 関西造船協会誌. 212. 57-66 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 張懐新外: "縦動揺する楕円柱の粘性伴流の計算" 関西造船協会誌. 212. 45-56 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] 姫野洋司外: "曲面の表現と曲面上の等高線-3次元等高線描画システムの紹介-" 関西船舶流体力学研究会シンポジウム,「船舶流体力学におけるコンピュ-タグラフィクスの応用」. 21-32 (1989)

    • Related Report
      1989 Annual Research Report

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Published: 1989-04-01   Modified: 2016-04-21  

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