移動境界問題における高速逐次格子生成法の開発 : 一様流中の振動円柱における同期現象の数値解析

概要

論文の詳細を見る
In these days, numerical fluid dynamics is applied to various engineering fields. In the dynamic analysis, Moving Boundary Problems are investigated for fluid-solid interaction systems. When an object is changing its shape, or moved by fluid force loaded on the surface of the body, a mesh generator is required to generate a computational grids at every time step. Conventional mesh generating methods base on harmonic or semiharmonic functions. They take a large amount of CPU time to generate an arbitrary mesh system because it needs some iteration procedures to solve Poisson's equation or Laplace's equation for harmonic mesh distribution. In this study, instead of these methods, we proposed a technique for 'High speed' mech generation method associated by an elastic theory of mechanical beam, and developed a system which can generate a mesh according to moving boundary successively, and confirm the validity of it through simulation of a fluid flow around a vibrating cylinder.
日本シミュレーション学会の論文
1992-12-15