4114 移動境界流れの数値解析法の比較研究(G05-9 回転に伴う流れ,G05 流体工学)  [in Japanese] 4114 A comparison study of numerical method about moving boundary problem  [in Japanese]

There are various numerical methods for simulating flow fields involving moving boundaries. In this study, the moving boundary fitted grid method and overset grid method are used for computing fluid flow around a cylinder in a cylindrical vessel. The numerical results are compared with the result obtained by rotating fixed coordinate systems, which can simulate moving boundary problem on stationary coordinate systems without grid moving and deformation. The computational accuracy of different numerical method are investigated.