Numerical methods for problems in marine hydrodynamics

海洋流体动力学问题的数值方法

• 批准号: 60302055
• 负责人: MORI Kazu-hiro
• 金额: $ 3.78万
• 依托单位: HIROSHIMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Co-operative Research (A)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1987
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60302055/
• 关键词: Rankine Source Method; Free-Surface Flow; Wedge-Entry; Wave Force; Wave-Breaking; Submerged Foil; Large Eddy Simulation; 剥離流れ; ナビエ・ストークス方程式; 数値シミュレーション; 境界要素法; 定常造波抵抗; 波浪外力; 非線形流体力; 非線形自由表面波; ポーポイズング

In the present project four important marine hydrodynamic problems are studied by numerical methods. An open forum was held by the present investigators and most of the results of the present project are published in its proceedings.Simulations of steady ship wave and caluclations of wave resistance are carried out by the Rankine source method and by a direct simulation method to solve N-S equation.Hydrodynamic forces acting on the offshore structures floating among waves are calculated by a boundary element method and by the singularity method. An entry problem of a wedge-like body is simulated.A grid generation method for the overturning waves is developed. Wave breakings on a submerged hydrofoil are studied.The nonlinear phenomenon of a planing plate is demonstrated.Separated viscous flows behind cylinders and a wing section are studied numerically and experimentally. An attempt is made to simulate the turbulent flow between the parallel plates by the Large-Eddy simulation method.

本项目用数值方法研究了四个重要的海洋水动力问题。本文采用Rankine源法和求解N-S方程的直接模拟法模拟了定常船舶波浪和计算波浪阻力，采用边界元法和奇异性法计算了浮于波浪中的海洋结构物所受的水动力，并对波浪中浮于波浪中的海洋结构物进行了数值模拟。对楔形体的入水问题进行了数值模拟，提出了一种适用于倾覆波的网格生成方法。本文研究了水下水翼的波浪破碎问题，揭示了滑行板的非线性现象，并对圆柱和翼型后的粘性分离流进行了数值和实验研究。本文尝试用大涡模拟方法来模拟平板间的湍流流动。

项目成果

Katsuo Suzuki: Proc. of 4th International Conference on Numerical Ship Hydrodynamics. 308-322 (1985)

铃木胜夫：Proc。

沢田 信一: 船舶数値流体力学フォーラム. 29-37 (1987)

Shinichi Sawada：船舶计算流体动力学论坛。29-37 (1987)

Katuo Suzuki: "Comparison of Calculation Methods for 2-D Free-Surface Flow about Hydro-Foil" Open Forum on Numerical Ship Hydrodynamics. 107-128 (1987)

Katuo Suzuki：“Hydro-Foil 二维自由表面流计算方法的比较”数值船舶流体动力学公开论坛。

安東 潤: 西部造船会会報. 75. 1-12 (1988)

安藤淳：西方造船师协会公报，75. 1-12 (1988)。

経塚 雄策: 第8回海洋工学シンポジウム. 251-258 (1988)

京冢佑作：第八届海洋工程研讨会。251-258（1988）