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采用 Poisson方程进行曲线网格生成时 ,如何确定合适的调节因子 P、 Q函数是网格生成技术中一个重要的研究内容。提出一种新的构造 P、 Q函数的方法 ,该方法直接利用边界网格节点的分布信息来控制区域内部网格节点的分布 ,生成的正交曲线网格令人满意。该方法在数值模拟河道、湖泊等一类复杂边界的二维流速场中有很大的实用价值
When using Poisson equation to generate curve mesh, how to determine the appropriate adjustment factor P and Q function is an important research content in grid generation technology. A new method for constructing P and Q functions is proposed. The method directly uses the distribution information of boundary grid nodes to control the distribution of grid nodes in the area. The generated orthogonal curvilinear grid is satisfactory. The method has great practical value in the numerical simulation of two-dimensional velocity field such as river, lake and other complex boundaries