Abstract：To evaluate the effects of mesh generation techniques and grid convergence on pump performance, three widely used mesh styles of structured hexahedral, unstructured tetrahedral and hybrid prismatic/tetrahedral meshes were generated for a centrifugal pump model. The quantitative grid convergence was assessed based on a grid convergence index (GCI) to deduce the degree of grid refinement. The results show that the GCIvalue becomes smaller with the increasing of grid cell number, and the GCIvalue for structured meshes calculated is lower than those for unstructured and hybrid meshes. The structured meshes have more vortexes in impeller passage. Nevertheless, the hybrid meshes have larger lowvelocity area at outlet and more secondary vortexes at a specified location than those of structured meshes and unstructured meshes.
刘厚林, 刘明明, 白羽, 杜辉, 董亮. 基于GCI的离心泵网格的收敛性[J]. 江苏大学学报（自然科学版）, 2014, 35(3): 279-283.
Liu Houlin, Liu Mingming, Bai Yu, Du Hui, Dong Liang. Grid convergence based on GCI for centrifugal pump[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2014, 35(3): 279-283.
2014, Vol. 35 
