SIMULATIONS FOR SOME LOW AND MEDIUM REYNOLDS NUMBER PROBLEMS USING IMMERSED BOUNDARY METHOD IN FOAM-EXTEND

摘要：

Immersed boundary method was first proposed by Peskin1,2 for the simulation of human heart.The method was later extended to many fields3,4.By using cartesian grids,the immersed boundary method has some advantages in the simulation of complex boundary and moving boundary problems.In this paper,the method employs a discrete force approach which uses two polynomial interpolation combined with weighted least squares method5,6 for the reconstruction of the flow variables.Space domain was discretized using the finite volume method and time was discretized using Euler method.PISO algorithm was utilized for the couple of velocity and pressure field.Simulations of flow around a two-dimensional cylinder,an oscillating cylinder,a three-dimensional sphere and a two-dimensional fish were conducted to verify the accuracy and fidelity of the solver over low and medium Reynolds numbers covering static and dynamic boundary problems.It can establish foundations for the future handling of more complex problems in the field of naval and bionic hydrodynamics.Results show that those simulations have a high fit degree with relevant references.

关键词： numerical simulation immersed boundary method dynamic boundary

作者: DONG ZHANG DONG ZHANG PAN GUANG LIMING CHAO

作者单位: Dong Zhang School of Marine Science and Technology,Northwestern Polytechnical University,Xian710072 JianZhen Zhao School of Marine Science and Technology,Northwestern Polytechnical University,Xian710 Guang Pan School of Marine Science and Technology,Northwestern Polytechnical University,Xian 710072 Liming Chao School of Marine Science and Technology,Northwestern Polytechnical University,Xian71007

会议类型: 国际会议

会议名称: The 13th OpenFOAM Workshop(第13届OpenFOAM国际研讨会)

会议地点: 上海

会议语种:英文

页码: 68-70

在线出版日期: 2018-06-24（万方平台首次上网日期，不代表论文的发表时间）