含动边界非结构化自适应网格生成方法研究  

A Study on Formation of the Unstructured Adaptive Grid with Moving Boundaries

作　　者：吴德红[1] 郑莉[1] 耿继辉[1] 李鸿志[1] 

机构地区：[1]南京理工大学动力工程学院,南京 210094

出　　处：《南京理工大学学报》2000年第5期406-409,共4页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金

摘　　要：在处理包含运动边界的流体运动时 ,由于边界的运动而引起网格的变形 ,对精度和计算步长造成严重的影响。该文讨论了当网格变形严重后对网格重新修正的方法。主要包含以下几个内容 :常用的生成非结构化网格的方法 ,即阵面推进法和Delaunay方法 ;利用自动插点的Delaunay方法生成二维三角形网格以及网格的自适应过程 ;During simulation of flows with moving boundaries, grid deformation caused by moving boundaries will have significant effect on time step and precision. This paper provides a method to correct the deformed grids. After some grid generation methods are discussed, i.e. the advancing front method and the Delaunay method, the process of 2 dimensional grid generation by using automatic point creation Delaunay method and grid adaptivity is presented. Then the problem of grid deformation for transient compressible flows with moving boundaries is feasibly solved by using a grid regeneration technique.

关 键 词：变形纠正 自适应性 非结构化网格 动边界 DELAUNAY方法 非定常流场 

分 类 号：O35[理学—流体力学]