摘要
弹簧方法是一种常被采用的非结构动网格生成方法,文中采用一种新的非结构动网格生成方法即弹性体方法(Elastic solid method,ESM)。和弹簧方法相比,虽然弹性体方法的计算量大,但是可以处理大位移的情况,尤其善于处理网格扭转很厉害的情况。另外,采用弹性体方法可以减小网格重新生成的频率,从而可以减小映射误差,同时也可以减小网格重新生成带来的计算量。将两种方法的数值模拟结果进行对比,进一步表明该弹性体方法在处理动网格问题中的优势。
The spring analogy method is one of the methods used to generate unstructured moving grids. A elastic solid method is used to generate unstructured moving grids. Compared with the spring analogy method, the method has big computation load and can treat the situation with big displacement and torsion. Furthermore, the elastic solid method can reduce the grid regeneration frequency, the mapping error and computation load because of grid regeneration. Finally numerical simulation results of two methods are compared. The result indicates that the elastic solid method has more advantages than the spring analogy method, thus it can treat the problems of moving grids.
出处
《南京航空航天大学学报》
EI
CAS
CSCD
北大核心
2007年第5期633-636,共4页
Journal of Nanjing University of Aeronautics & Astronautics
基金
国家自然科学基金(10476011)资助项目
关键词
流体力学
网格生成
非结构网格
动网格
弹性体方法
fluid dynamics
grid generation
unstructured grids
moving grids
elastic solid method
