【摘要】 边界拟合曲线坐标(BFC)网格生成的质量直接影响流场的数值模拟精度和收敛速度,而如何选取生成BFC网格的Possion方程右端调节因子P和Q,则关系到生成的BFC网格质量.本文提出了一种可以同时实现控制网格正交性和控制边界网格间距的BFC网格生成的新方法.该方法可任意控制生成的网格边界间距大小,同时,生成的BFC网格还具有边界及内部较好的正交性.应用实例的计算结果表明,该方法能够对复杂边界的单连通域或多连通域生成较理想的BFC网格,网格分布能够适应流动参数的变化.更多还原

【Abstract】 The quality of the body-fitted coordinate(BFC) grid has great influence on the convergence velocity and the precision of numerical simulation,and the quality of grid is related to the selection of source term P and Q.In this paper,a new method is pro posed to generate the BFC gird with the adjustable boundary mesh intervals and orthogonality.The real examples show that the grids can be generated by the method for the single-connected and mutli-connected regions with complicated boundary.更多还原