摘要
本文采用下潜源思想改进的H-S方法,运用“平面镜像原理”对有限水深中的任意形状无升力体绕流问题进行了研究,并编制了相应的程序以圆球绕流为例进行了数值计算。文中首先概述了下潜源法的基本思想,给出了有限水深的格林函数表达式。然后介绍了数值计算要点和若干技巧,对计算结果进行了详细分析。最后总结了下潜源法的特点,并深讨了水底效应的作用。
In this paper, H-S method is improved by the idea of sub merged sources and the nonlifting potential flow problem of arbitrary shape bodies in finite depth water is studied by the plane mirror principle.
The corresponding computer program is worked out. A sphere is taken as an example for numerical calculation. Firstly, the fundamental
idea of submerged source method is introduces and the Green function
expression for the case of finite depth water is presented. Then some details and skills in numerical calculations are stated. Discussion on the calculation results arc also made. Finally, the advantages of the submerged source method arc summerized and the functions of water bottom effects on a sphere arc discussed.
出处
《工程力学》
EI
CSCD
1993年第2期123-131,共9页
Engineering Mechanics
关键词
势流
下潜源过
水底效应
数值计算
potential flow, submerged source method, water bottom effect, numerical calculation
