二维任意区域贴体曲线坐标的弧长参数生成法
AN EFFICIENT 2D-GRID GENERATION APPROACH USING ARC-LENGTH AS A PARAMETER
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摘要: 为了求解飞机和发动机这类极其复杂的流场,首先必须发展一种快速、有效和灵活的贴体曲线坐标生成法。Abstract: A fast and efficient grid generation program has been developed for any two-dimensional configurations.In this scheme,the separate grids are generated in each zone with a high speed algorithm which makes the ratio of the coordinate increments satisfy a linear distribution along arc-length of a grid curve,and then they smoothly joined along the common boundaries to establish the grid for the complex configuration.The advantages of the scheme are as follows:First,the mesh lines have continuous slopes from one zone to another;Second,the degree of the mesh lines clustering can be well controlled by the distribution of the boundary points;And the third,the computational speed is ten and even several hundred times faster than the elliptic grid generation scheme which has been widely used nowadays.
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