非结构网格自适应的新策略  

A NEW STRATEGY OF GRID ADAPTION IN 2D UNSTRUCTURED MESH

作　　者：成娟[1] 黄明恪[1] 

机构地区：[1]南京航空航天大学空气动力学系

出　　处：《计算物理》1999年第1期99-103,共5页Chinese Journal of Computational Physics

基　　金：航空基金

摘　　要：对于用推进波阵面法生成二维非结构网格，提出了一种网格自适应的新方法。在网格需要加密处，布置一些小的三角形单元，并以这些单元的边作为初始推进波阵面的一部分。在推进过程中，小单元附近自然生长出尺寸逐渐变大的单元。对有激波的流动，在网格图形上。A new method for adaptive refinement of 2D unstructured grids generated by advancing front technique is presented.Some small triangle units are arranged on the place where mesh needs to be refined,and all the sides of these units are regarded as a part of the initial front.During the advancing process,near the above mentioned units,the cells are naturally generated from small to large.For the flow with shock,in the mesh graph,a quite clear shock picture is formed.

关 键 词：非结构网格 推进波阵面法 欧拉方程 

分 类 号：O35[理学—流体力学]