物体透過格子法を用いた非圧縮流体と複数物体の連成シミュレーション(移動境界・移動床,一般講演)

概要

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The purpose of this paper is to calculate the incompressible viscous fluid-bodies interaction. For moving boundary problem, a body fitted coordinate system is usually employed. However, for the case that body moves so much widely, it is difficult to keep a mesh distribution with holding good resolution of the solution because of the extremely skewed mesh. It means that mesh interval becomes extremely and locally wide or narrow. Therefore, there exists a limit of the movement of the body. To avoid the highly skewed mesh, we have proposed "Body-Permeable Mesh Method" in this paper. The feature of this method is that the body moves in the fixed mesh system with the mesh point in front of the body passing through the inside. In this paper, a simulation of movement of balls drifted by incompressible viscous fluid flow in the square pipe using this method is presented.
2010-09-09