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Numerical analysis on inner flow in low specific speed double-suction centrifugal pump with spiral suction chamber |
ZHU Rong-sheng, OU Ming-xiong, FU Qiang, GUAN Rong-guo, LI Ji-zhong |
Technical and Research Center of Fluid Machinery Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract With the use of RNG turbulent model in the CFD software Fluent,the inner flow of double suction centrifugal pump with semi-spiral suction chamber was calculated.It was found that the flow rate is increasing from inlet to outlet in the impeller at the first half of impeller channel;the velocity beside the pressure side of blade is larger than that beside the suction side.The flow field distribution of impeller is uniform.But in the semi-spiral suction chamber,swirls occur beside the tongue and sealed block at the designed flow rate,and the swirls become more obviously when the flow rate increases,which has effect on the inlet condition of the impeller.The above analysis provides references for the improvement of the double suction pump with semi-spiral suction chamber.
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Received: 08 August 2013
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[1] 赵斌娟,袁寿其,李红.双吸式叶轮内流三维数值模拟及性能预测[J].农业工程学报,2006,22(1):93-96[2] 马希金,秦霞.混输泵半螺旋形吸入室流场的三维模拟分析[J].排灌机械,2005,23(5):11-14[3] 朱红耕,袁寿其,刘厚林.进水流道对立式混流泵装置能量特性的影响[J].江苏大学学报(自然科学版),2007,28(1):46-50[4] Alexandrina U,Throckmorton A L,Patel S M.Numerical and experimental analysis of an axial flow left ventricular assistdevice:the influence of the diffuser on overall pump performance[J].Artificial Organs,2005,29(7):581-591[5] Busby J A.Unsteady 3-D incompressible flow interaction in multiple-blade-row turbomachinery[D].Mississipi State:Department of Aerospace Engineering,1997[6] Cheah K W,Lee T S,Winoto S H.Turbulence flow simulation through centrifugal pump impeller at design and off-design condition[A].北京:中国铁道出版社,1995:155-167[7] Chan W K,Wong Y W,Ding Y.Numerical investigations of a centrifugal blood pump[J].Journal of Mechanics in Medicine and Biology,2004,4(3):237-255[8] 王福军.计算流体动力学分析[M].北京:清华大学出版社,2004 |
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