%A Wang Hongliang£¬ Shi Weidong£¬ Lu Weigang£¬ Zhou Ling£¬ Wang Chuan %T Hydraulic design and quadratic regression orthogonal experiment of deep well centrifugal pumps %0 Journal Article %D 2010 %J Journal of Drainage and Irrigation Machinery Engin %R 10.3969£¯j.issn.1674¡ª8530.2010.06.005 %P 479-483 %V 28 %N 6 %U {http://zzs.ujs.edu.cn/pgjx/CN/abstract/article_311.shtml} %8 2010-11-30 %X According to the research and development request of new deep well pump energyª²saving and materialª²saving, test investigation was taken to increase the efficiency of deep well pumps by using ª©hydraulicªª design of impeller, the modern CFD and the quadratic regression orthogonal test method. The experiment was carried out with two factors of outlet angle and outlet width. Ten impellers were designed through testing schemes of quadratic regression. The whole flow field of the twoª²stage newª²type deep well pumps at design condition was simulated by CFD, and the efficiency of each case was obtained. The effects of both outlet angle and outlet width on efficiency were investigated through quadratic regression orthogonal testing method. According to the calculation results, constrained quadratic regression equation of the efficiency was put forward. The result shows that it would be instructive to increase the hydraulic efficiency of newª²type deep well pumps by using the impeller diameter maximum approach.ª¤