二维Euler方程的自适应非结构网格生成方法

Adaptive unstructured grid for two-dimensional Euler equations

发展了一种用于数值模拟二维Euler方程的自适应非结构网格的生成方法。这一方法根据背景网格提供的信息直接确定内部结点的位置 ,然后依照Delaunay准则 ,将新结点加入到已有网格划分中。用于平面流及管道流的实际计算中 ,结果表明 ,该方法不受流场形状及流动特征的限制 。

An approach for generating adaptive unstructured grid was developed to solve the two dimensional Euler equations. The internal point position was computed according to the size parameter prescribed by the background grid. It was then introduced into the existing grid utilizing Delaunay criterion. The related algorithm is of great simplicity allowance for automatic and flexible treatment of arbitrary shapes and flow features.