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《Engineering Journal of Wuhan University》 2010-01
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Numerical simulation of influence of eccentricity of nozzle on jet pump performance

YAN Hengfei,LONG Xinping(School of Power and Mechanical Engineering,Wuhan University,Wuhan 430072,China)  
The effect of eccentricity of nozzle,which is the offset between axes of nozzle and pump body,on the flow field and performance of jet pump are examined numerically.The performance parameters of jet pump with different eccentricities of nozzle have been calculated.It is revealed that the eccentricity of nozzle has a great influence on the performance when jet pump works in operating mode of big flow ratio,but nearly none effect in small flow ratio.The maximum efficiency and the corresponding flow ratio decrease as the eccentricity increases.In view of engineering application,it is reliable and economical when the degree of proper alignment accuracy for jet pump achieves 12 and above.
【Fund】: 武汉大学自主科研项目(编号:5081011)
【CateGory Index】: TH38
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