论文部分内容阅读
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。使用上述方法本文构造了二维弯管内绕叶栅区域的非结构网格
The generation of unstructured grids is described. The generation of grids is based on the Delaunay triangulation method and the grids near the object surface are stretched to obtain triangular cells with high draw ratio in the boundary layer. The generation process of the grid is divided into two parts: (1) According to the Delaunay triangulation method, a non-structural grid suitable for non-stick conditions is generated. (2) Stretch some of the triangular units near the object plane so that the resulting mesh can be applied to viscous flow. Using the above method, we construct a non-structured grid of two-dimensional bends around the cascade region