关键词: 再制造, 叶轮, 拓扑结构, 六面体网格

Abstract: To effectively improve the simulation accuracy and computational efficiency in the simulation of centrifugal remanufactured compressor impeller,a structure hexahedral mesh generation method with high quality for remanufactured impeller was proposed.The failure characteristics of the impeller were analyzed,and a remanufactured impeller model based on computer-aided design space modeling theory was established.According to the topology theory,a virtual planning of the complex model computational domain method was proposed to accomplish the plan of remanufactured impeller computational domain.By using the mesh generation algorithm with the source terms of Laplace equation and the mesh size control algorithm,the mesh quality was improved effectively.The mesh quality evaluation and the finite element simulation showed that the proposed mesh model had many advantages such as high quality,high precision and high efficiency.

Key words: remanufacturing, impeller, topology structure, hexahedral mesh