A fast and reliable overset unstructured grids approach

作     者：Zhong-Liang Kang Chao Yan Jian Yu Yuan-Yuan Fang 

作者机构：Institute of Fluid MechanicsBeihang University Academy of Beijing Gas GroupCo.Ltd 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2013年第29卷第2期

页      面：149-157页

核心收录：

学科分类：080704[工学-流体机械及工程] 07[理学] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 070104[理学-应用数学] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：supported by the National Basic Research Program of China (2009CB724104) 

主　　题：Overset unstructured grids·Dynamic grids·Intergrid boundary definition·Interpolation 

摘      要：A cell-centred overset unstructured grids approach is *** this approach,the intergrid boundary is initially established based on the wall distance from the cell centre,and is then *** accelerate the intergrid-boundary definition much more,a neighbor-toneighbor donor search algorithm based on advancing-front method is modified with the help of minimum cuboid *** simplify the communications between different grid cell types and to obtain second-order spatial accuracy,a new interpolation method is constructed based on linear reconstruction,which employs only one layer of fringe cells along the intergrid *** unsteady flows with relative motion,the intergrid boundary can be redefined fast and *** numerical results show that the present dynamic overset unstructured grids approach is accurate and reliable.