三维非结构网格的生成及其应用

Generation of 3D Unstructured Grid and Its Application

采用阵面推进法 (Advancing front)生成了高质量的三维四面体非结构网格。该方法的特点是在生成单元的同时引入结点 ,与其他预布结点的方法相比 ,其好处是能更好地控制网格单元尺度在整个计算域的合理分布并提高网格质量。用 Delaunay方法连接存储有控制参数的结点生成了背景网格。网格生成过程中采用了合理的数据结构 ,有效地提高了程序运行效率。最后给出了 M6机翼的数值算例。

The advancing front method is explored to generated three dimensional (3D) unstructured tetrahedral grids with high quality. In this method,the introduction of new points and elements is simultaneously carried out. An advantage of the method over other point pre setting method is that it can give a better control over the grid spacing and improve the mesh quality. The background grid is generated by connecting an already existing point distribution, in which storing control parameters, are used by Delaunay method. Some reasonable data structures are applied for performing the searching operations which improve the overall efficiency of the algorithm. Finally numerical experiment involving M6 wing is presented.