【摘要】 为了改善流体数值计算的准确性和软件应用的方便性,对基于边界CAD模型的网格生成算法进行了探究.在对TM法和魏文礼法进行改进的基础上,结合邻边界节点滑动法,提出了一种改进的TM-魏法.在对AutoCAD软件进行二次开发的基础上,编制了基于边界CAD模型的网格生成软件,采用该软件对TM法、魏文礼法和改进的TM-魏法进行了比较,结果表明,改进的TM-魏法生成的网格在边界处及内部正交性上优于TM法或魏文礼法,对流场的适应性较好,且人机交互操作简单、方便.更多还原

【Abstract】 To evaluate flow fields more accurately and use the software more easily,the algorithm for generating two-dimensional grid based on the CAD model of boundaries is investigated.Analyzing the TM method and the WEI Wenli method,and considering the adjacent boundary nodes sliding method as a reference,an improved method(called improved TM-WEI method) for generating body-fitted grid is proposed.Following the developed AutoCAD software,the two-dimensional body-fitted grids can be generated.A comparison of the improved TM-WEI method with TM method and WEI Wenli method shows that the grids generated by the improved TM-WEI method at the boundaries and the interior have better orthogonality than TM method and WEI Wenli method with higher accuracy of solution and better convenience of generation.更多还原