摘要
本文提出一种简单通用的自适应计算网格生成方法。配合文[1]的网格优化方法,能在生成自适应网格的同时,保证网格具有较好的光滑性和正交性。本文还阐述了单元加权函数W的取值和边界点的确定对自适应网格性质的影响。作为应用实例,本文将自适应网格用于二维无粘跨音速叶栅流场计算。结果表明,采用自适应网格能明显改善流场的计算精度。
This paper presents a simple and general method for generating adaptive computational grids. The procedure can be implemented with grid optimization method of reference [1], and adaptive grids produced with high quality smoothness and orthogonality. It is pointed out that the selection of grid cell weighting function W and the distribution of grid points on the boundary may have significant influence on the grid quality. As an application example, the 2-D inviscid transonic cascade flow is solved by using adaptive grids. The result shows that the accuracy of calculation can be improved when the adaptive grids are employed
关键词
计算流体力学
网格
自适应性
computational fluid mechanics, computational method, grid, adaptivity
