三维分块非结构化网格上的可压缩流计算方法

Numerical method of compressible flow on three-dimensional sub-block unstructured grid

提出了分块非结构化网格生成方法,通过子块划分、子块网格划分、整体网格拓扑连接生成可局部加密的分块非结构化网格,既具备了非结构化网格对复杂区域的处理能力,又避免了分块结构化网格块间信息传递的复杂计算过程.通过将密度修正值引入压力修正方程,发展了非结构化网格上可压缩流动的SIMPLE算法.对孤立翼型及透平叶栅的流动进行了数值计算,压力系数、速度、折转角的数值结果与已有的实验值吻合较好,验证了数值方法的精度.

A numerical method for calculation of internal flow in turbomachinery was developed.Firstly,the sub-block unstructured grid generation method was proposed.The complex multiple-connected flow domain was divided into several simple single-connected sub-blocks,and then each sub-block was discretized into body-fitting meshes,finally,each sub-block grid was united to form a whole grid,whose topological connection information was saved by unstructured grid manner.The sub-block unstructured grid not only has the a...