Delaunay graph-based moving mesh method with damping functions  

作　　者：Yibin WANG Ning QIN Ning ZHAO 

机构地区：[1]College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics [2]Department of Mechanical Engineering,The University of Sheffield

出　　处：《Chinese Journal of Aeronautics》2018年第11期2093-2103,共11页中国航空学报（英文版）

基　　金：partially funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions of China;National Natural Science Foundation of China (No. 11432007);Natural Science Foundation of Jiangsu Province of China (No. BK20140805)

摘　　要：The fluid–structure interaction and aerodynamic shape optimization usually involve the moving or deforming boundaries, thus the dynamic mesh techniques are the key techniques to cope with such deformation. A novel dynamic mesh method was developed based on the Delaunay graph in this paper. According to the Delaunay graph, the mesh points were divided into groups. In each group, a factor ranging from 0 to 1 was calculated based on the area/volume ratio. By introducing a proper function for this factor, this method can control the mesh quality with high efficiency. Several test cases were compared with other dynamic mesh methods regarding mesh quality and CPU time, such as radial basis function method and Delaunay graph mapping method.The fluid–structure interaction and aerodynamic shape optimization usually involve the moving or deforming boundaries, thus the dynamic mesh techniques are the key techniques to cope with such deformation. A novel dynamic mesh method was developed based on the Delaunay graph in this paper. According to the Delaunay graph, the mesh points were divided into groups. In each group, a factor ranging from 0 to 1 was calculated based on the area/volume ratio. By introducing a proper function for this factor, this method can control the mesh quality with high efficiency. Several test cases were compared with other dynamic mesh methods regarding mesh quality and CPU time, such as radial basis function method and Delaunay graph mapping method.

关 键 词：Delaunay graph mapping Dynamic mesh Grid deformation MESH Moving mesh 

分 类 号：V[航空宇航科学技术]