Abstract：The three-dimensional incompressible turbulent flow of coupled impeller and volute was simulated by using reynolds time-averaged N-S equations,the standard k-ε turbulent model, three-dimensional non-structural tetrahedral mesh and multiple reference frame of rotating fluid mechanical model.The velocity and pressure distributions in the volute and impeller were obtained.The relative velocity and pressure distributions in the impeller interior were analyzed in detail.It was proved that the interior flow field of impeller is nonsymmetrical due to the interaction of impeller and volute in different relative position.The velocity in the volute nearby the impeller outlet was higher.It was found that the interior flow in the volute was turbulent due to its complicated structure,and can result in some loss.In addition.It was revealed that those vortexes exist nearby the clapboard and in the separation chamber.The reason was analyzed and discussed.
[1] 吕智君,兰才有,王福军.自吸泵研究现状及发展趋势[J].排灌机械,2005,23(3):1-5[2] Yu H,Kivilathti J.CFD modeling of the flow field inside a reflow Oven[J].Soldering and Surface Mount Technology,2002,14(1):38-44[3] Majid K.Numerical study of unsteady flow in centrifugal pump[J].Journal of Turbomachinery,2005,127(2):363-371[4] 王福军.计算流体动力学分析[M].北京:清华大学出版社,2004:7-11[5] Caridad J,Kenyery F.CFD analysis of electric submersible pumps(EPS) handing two-phase mixtures[J].Transaction of the ASME:Journal of Energy Resource Technology,2004,126(2):99-104[6] 施卫东,张启华,陆伟刚.新型井泵水力设计及内部流动的数值模拟[J].江苏大学学报(自然科学版),2006,27(6):528-531[7] Zhou Weidong,Zhao Zhimei,Lee T S.Investigation of flow through centrifugal pump impellers using computational fluid dynamics[J].International Journal of Rotating Machinery,2003,9(1):49-61[8] 常洪军,朱熠.液体射流泵内部三维流场的数值模拟[J].排灌机械,2005,23(6):13-15[9] 关醒凡.泵的理论与设计[M].北京:机械工业出版社,1998:57
