摘要
为了保证自适应性以及生成网格与总体网格之间的协调性,针对结构规则的复杂局部特征的网格剖分过程,提出了几何特征的六面体网格剖分方法.首先,分析了几何特征的类型以及网格剖分流程,并以此为基础将与几何特征网格剖分相关的参数进行分类.然后,通过将参数化的设计思想分别引入实体分离、特征体分解、网格生成等几何特征网格剖分环节,建立从几何特征信息到网格剖分细节(如边网格数、网格剖分策略等)的参数驱动机制,并构建几何特征网格剖分数据库,使得与几何特征对应的参数驱动机制固化在网格剖分程序中.最后,分别在不同单元尺寸情况下,对涡轮叶片上的气膜孔和扰流柱特征进行六面体网格剖分.实验结果表明了所述方法的可行性和稳定性.
In order to guarantee self-adaptability of geometric features and coordination between meshes ofgeometric features and overall structure, a hexahedral mesh generation method for geometric features was pro-posed which focuses on generating high-quality hexahedral meshes for local complex features having regularstructures- Firstly, types of geometric features and meshing processes of geometric features were analyzed,based on which parameters relevant to meshing processes of geometric features were separated into two catego-ries, real and virtual parameters- Subsequently, through integrating the design thought of parameterization intogeometric features＇ three typical meshing processes including entity separation, feature decomposition andmesh generation, a parameter-driven mechanism transferring information from geometric features into meshingdetails （ such as numbers of elements of edges, specific meshing strategies, etc） was built- Also, meshing da-tabase for geometric features was established so as to solidify the parameter-driven mechanism corresponding togeometric features into meshing programs- Finally, film-cooling holes and spoiling posts of turbine blades weremeshed under different designated element sizes- Meshing results reveal the applicability and stability of themethod proposed-
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2014年第4期529-535,共7页
Journal of Beijing University of Aeronautics and Astronautics
