非结构网格生成技术  

Unstructured Grid Generation Technique

作　　者：刘星[1] 卞恩荣[1] 朱金福[1] 

机构地区：[1]南京航空航天大学飞行器系,南京210016

出　　处：《南京航空航天大学学报》1999年第6期696-700,共5页Journal of Nanjing University of Aeronautics & Astronautics

摘　　要：描述了非结构网格生成的过程,网格的生成方法基于Delaunay 三角形方法,并对物面附近网格进行拉伸以便获得在边界层内高拉伸比的三角形单元。网格的生成过程分两部分:(1) 按Delaunay 三角形方法生成适于无粘情况下的非结构网格。(2) 对近物面的部分三角形单元进行拉伸,使生成的网格能适用于粘流。An unstructured grid generation process is described. The method is based on a Delaunay triangulation performed in a locally stretched space in order to obtain very high aspect ratio triangles in the boundary layer. The process of grid generation includes two parts: (1) Generate an unstructured triangular mesh fit for inviscid flow according to Delaunay triangulation. (2) Stretch the triangulations close to the surface so that the mesh is fit for viscous flow. The unstructured grid is generated in a syphon containing a vane.

关 键 词：边界层 非结构网络 三角形单元 计算流体力学 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]