规则六面体多重网格生成方法的研究

本文介绍了CFD前处理技术的重要性和网格自动生成技术的发展现状，根据多重网格法的基本思想和应用，开发了基于Windows平台的前处理软件，实现了规则六面体多重网格的自动生成。在进行网格划分时，该软件可以根据需要对边界进行疏密不同的局部单重网格划分，然后在单重网格基础上进行加密划分，最后建立粗细网格间的节点坐标映射，生成多重网格。采用此软件，对室内空气数值模拟中的典型几何模型进行了网格划分，生成了高质量的规则六面体网格，从而证明了该软件能有效且方便地应用于室内空气数值模拟中。

Research on the Method of Multi-grid Generation Based on Regular Hexahedron

The importance of CFD preprocessing and the development status of mesh automatic generation technology are introduced. According to the basic idea and the applications of multi-grid, a preprocessing software has been developed based on Windows platform. It can produce multi-grid based on regular hexahedron. On the process of mesh generation, the software can make the coarsest mesh based on different porosity of boundary and encrypt the division. Finally the nodes coordinate mapping between coarse and fine grid is set up, and multiple mesh is created. This software can produce high-quality hexahedral grids, especially applied to numerical simulation of indoor air. And it is proved that the software can be used in numerical simulation of indoor air effectively and expediently.