XU Lei,DU Yan-bin,ZHANG Lei.Hexahedron Mesh Generation Method of Pump Impeller Based on Topological Division[J].Journal of Chongqing Technology and Business University(Natural Science Edition）,2020,37(4):39-45

Hexahedron Mesh Generation Method of Pump Impeller Based on Topological Division

DOI：

 作者 单位 许磊, 杜彦斌, 张磊 1.重庆工商大学 制造装备机构设计与控制重庆市重点实验室，重庆 400067；2.重庆水泵厂有限责任公司，重庆 400003

叶轮是泵设备的核心零部件之一，关系着泵设备运行的稳定性与安全性；为提高叶轮数值模拟试验的精度与求解效率，提出了一种基于拓扑分割的泵叶轮全六面体网格划分方法；首先进行物理三维模型的拓扑结构理论分析，获取模型的拓扑分割方法；其次研究基于映射理论的六面体网格生成方法，获得虚拟计算域模型；然后优化网格质量并进行网格规模控制；最后以泵叶轮为例，开展全六面体有限元网格划分，并利用ANSYS仿真软件，验证叶轮全六面体有限元网格划分方法的合理性；研究结果表明：叶轮全六面体网格模型具有网格质量高、抗畸变能力强、规模数量小、求解效率快等特点。

Impeller,a core component of pump equipment, is related to the stability and safety. In order to improve the accuracy and efficiency of numerical simulation, a new method of hexahedron mesh for impeller of pump based on topological segmentation is proposed. Firstly, the topological structure theory of three dimensional model is analyzed; Secondly, the hexahedral mesh generation method based on mapping theory is studied to obtain the virtual computing domain model;Thirdly, the mesh quality is optimized and the mesh size is controlled; Finally, the full hexahedral finite element method is developed with the pump impeller as an example. The finite element meshing method is verified by using ANSYS software. The results show that the all hexahedral meshes model has the characteristics of high mesh quality, strong anti distortion ability, small scale and efficiency.