Influence of Blade Outlet Angle on Performance of Low-specific-speed Centrifugal Pump

查看全文 作　　者：Cui [1]Baoling;Wang [1]Canfei;Zhu [1]Zuchao;Jin [1]Yingzi

机构地区：[1]The Province Key Laboratory of Fluid Transmission Technology,Zhejiang Sci-Tech University

出　　处：《Journal of Thermal Science》索引2013年第22卷第2期,共6页

基　　金：supported by National Natural Science Foundation of China granted No.50976105,No.51276172;Zhejiang Provincial Natural Science Foundation Granted No.R1100530 摘　　要：In order to analyze the influence of blade outlet angle on inner flow field and performance of low-specific-speed centrifugal pump, the flow field in the pump with different blade outlet angles 32.5°and 39° was numerically calculated. The external performance experiment was also carried out on the pump. Based on SIMPLEC algorithm, time-average N-S equation and the rectified k-ε turbulent model were adopted during the process of computation. The distributions of velocity and pressure in pumps with different blade outlet angles were obtained by calculation. The numerical results show that backflow areas exist in the two impellers, while the inner flow has a little improvement in the impeller with larger blade outlet angle. Blade outlet angle has a certain influence on the static pressure near the long-blade leading edge and tongue, but it has little influence on the distribution of static pressure in the passages of impeller. The experiment results show that the low-specific-speed centrifugal pump with larger blade outlet angle has better hydraulic performance. 关键词：叶轮叶片低比转速出口角泵性能离心泵 SIMPLEC算法数值计算内流场

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Influence of Blade Outlet Angle on Performance of Low-specific-speed Centrifugal Pump

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