任意回转面叶栅C网格的数值生成

Numerical Generation of C-Type Cascade Grid in Random Rotating Surfaces

首先尝试采用任意曲面椭圆方程，数值生成任意回转面上的叶栅Ｃ网格。经过对边界条件的仔细处理，生成的网格可保证在周期外边界和重合内边界上网格线导数连续，在叶片表面网格线相互垂直。提出了结合初始网格线分布，控制环绕叶片网格线分布的方法。

First attempts to apply elliptic equation of curved surfaces to generating C-type cascade grids. In the generated grids,derivative continuity of grid lines across outer periodic boundaries and inner coinside boundaries,and orthogonality of grid lines at the blade surface,are insured by careful use of boundary conditions. The method of controlling distribution of generated grid lines around the blade surface with that of initial grid lines is proposed.