摘要
对生成三维非结构化网格的D e launay方法进行了分析,给出四面体网格生成的基本步骤.改进判断非结构化网格质量的方法,提出采用四面体单元无量纲棱长的标准差对网格质量进行评价.对于已经生成的初始化网格,在棱长标准差最大的四面体单元内加入新点重新构造网格,反复进行迭代直到所有的标准差小于设定值.该方法比较灵活且易于实现.通过不同的算例对网格生成及改进方法进行了验证,获得了理想的结果.
Delaunay method for generation of 3D unstructured grids is analyzed and the tetrahedrization approaches are presented. The method for evaluation of the unstructured grids is improved, and the Standard Deviation （STD） of dimensionless edges of tetrahedral elements is introduced for evaluating the mesh quality. For the created initialization grids, a new node is added to the grid whose STD of dimensionless edge is maximal and accordingly the grid elements are reconstructed. This process is repeated until STDs of all grids are under a threshold value. The method is flexible and easy to implement, and this can be seen from three different examples presented in the paper.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2006年第1期58-62,共5页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
国家自然科学基金项目(1027089)
教育部博士点基金项目(20030698004)
