船舶与海洋工程学报(英文版)
船舶與海洋工程學報(英文版)
선박여해양공정학보(영문판)
JOURNAL OF MARINE SCIENCE AND APPLICATION
2010年
2期
181-186
,共6页
明平剑%孙扬哲%段文洋%张文平
明平劍%孫颺哲%段文洋%張文平
명평검%손양철%단문양%장문평
fluid structure interaction%immersed boundary method%VOS%unstructured grids%finite volume method
This paper presents an improved unstructured grid immersed boundary method. The advantages of both immersed boundary method and body fitted grids which are generated by unstructured grid technology are used to enhance the computation efficiency of fluid structure interaction in complex domain. The Navier-Stokes equation was discretized spacially with collocated finite volume method and Euler implicit method in time domain. The rigid body motion was simulated by immersed boundary method in which the fluid and rigid body interface interaction was dealt with VOS (volume of solid) method. A new VOS calculation method based on graph was presented in which both immersed boundary points and cross points were collected in arbitrary order to form a graph. The method is verified with flow past oscillating cylinder.
