Multi-parameter optimization design, numerical simulation and performance test of mixed-flow pump impeller  

作　　者：BING Hao CAO ShuLiang 

机构地区：[1]State Key Laboratory of Hydroscience and Engineering, Tsinghua University

出　　处：《Science China(Technological Sciences)》2013年第9期2194-2206,共13页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51176088)

摘　　要：On the basis of the three-dimensional design platform of the mixed-flow pump impellers, an optimization design system was developed in this paper by improving the genetic algorithm with application of both strategies of keeping the optimal individu- al and employing the niche. This system took the highest efficiency of the impeller as the optimization objective and employed P, a0, A0h and A0t, which could directly affect the shape and the position of the blade, as optimization parameters. In addition, loss model was used to obtain fast and accurate prediction of the impeller efficiency. The optimization results illustrated that this system had advantages such as high accuracy and fine convergence, thus to effectively improve the design of the mixed-flow pump impellers. Numerical simulation was applied to determine the internal flow fields of the impeller obtained by optimization design, and to analyze both the relative velocity and the pressure distributions. The test results demonstrated that the mixed flow pump had the highest efficiency of 87.2%, the wide and flat high efficiency operation zone, the relatively wide range of blade angle adjustment, fine cavitation performance and satisfied stability.

关 键 词：mixed-flow pump IMPELLER optimization design performance test numerical simulation 

分 类 号：TH313[机械工程—机械制造及自动化] TP273.1[自动化与计算机技术—检测技术与自动化装置]