关键词: 导叶优化, 离心泵, 数值模拟, 优化设计, 流场分析

Abstract: The current centrifugal pump cannot meet the needs of pumping water to high-lift with large-flow. Therefore, we designed a high-efficiency, high-lift and large-flow centrifugal pump with the guide vane, and analyzed the inside flow field. To improve the efficiency, a single factor test on the designed centrifugal pump was carried out by CFD model in this research, and the guide vane form, inflow angle and quantity were optimized. The results showed that the centrifugal pump efficiency increased by 5.01% after optimization. According to the flow field analysis, it was found that the flow field showed different flow patterns in small and large flow conditions. In the small flow condition, the vortex was small and dense, while in the large flow condition, the vortex was large and dispersed. The research results can provide some reference for the design of centrifugal pumps with guide vane.

Key words: guide vane optimization, centrifugal pump, numerical simulation, optimization design, flow field analysis;