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所属单位：航空学院
发表刊物：INTERNATIONAL JOURNAL OF COMPUTATIONAL FLUID DYNAMICS
关键字：Compressible viscous flow hybrid Cartesian grid donor cell method moving shock wave conservation
摘要：A hybrid Cartesian-based body-fitted adaptive grid method for compressible Navier-Stokes equations is implemented and investigated. In this method, the body-fitted structured grids are generated around the geometries, and the left regions are filled with Cartesian grids. To transfer the data between the different grids, the donor cell searching technique is adopted. An unstructured data-based finite volume update procedure is used, and least squares method is suggested to retain the second order in the overlap region. The moving shock waves with different speeds and vortex passing through the interfaces of the hybrid Cartesian grid are used to explore the accuracy and conservation. A new technique is presented to deal with the non-physical stagnation of slowly moving shock wave around the interface of grid. Numerical examples are presented to demonstrate the results. The three-dimensional extension has also been shown by a benchmark problem.
ISSN号：1061-8562
是否译文：否
发表时间：2018-01-01
合写作者：Gan, Yuxin,Liu, Jianming,Shen, Zhiwei
通讯作者：赵宁