Abstract：The internal 3D flow field of rotational flow self-priming pump was simulated numerically by using commercial CFD software FLUENT.Standard k-ε model was adopted in calculation,and reference frame model was chosen to couple the static-dynamic flow field of impeller and volute.The flow fields of pressure and turbulent kinetic energy near guide wall were obtained,and guide wall influence on flow field was analyzed.A performance prediction model was established.The influence of guide wall structure on performance was discussed by comparing the prediction performances of three models with diffe-rent guide wall wrap angles of 55°,65°,70°.It is shown that the guide wall structure has some influence on the performance and wrap angles of 65° is the optimal structure from three guide wall structures.The predicted results are also in agreement with experimental results.
[1]王春林,司艳雷,郑海霞.旋流自吸泵内部流场的数值模拟[J].排灌机械,2008,26(2):31-35.Wang Chunlin,Si Yanlei,Zheng Haixia.Numerical simulation of rotational interior flow in self-priming pump[J].Drainage and Irrigation Machinery,2008,26 (2):31-35.(in Chinese)[2]朱红耕,袁寿其,刘厚林,等.大型泵站蜗壳式出水流道三维紊流数值模拟[J].农业机械学报,2007,38(10):49-54.Zhu Honggeng,Yuan Shouqi,Liu Houlin,et al.Numerical simulation of the 3-D flow of a volute-type discharge passage in large pumping stations[J].Transactions of the Chinese Society for Agricultural Machinery,2007,38(10):49-54.(in Chinese)[3]Blanco E.Numerical simulation of the dynamic effects due to impeller-volute interaction in a centrifugal pump[J].ASME Journal of Fluids Engineering,2002,124:348-355.[4]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.Lü Zhijun,Lan Caiyou,Wang Fujun.The present status and development of self-pump[J].Drainage and Irrigation Machinery,2005,23 (3):1-5.(in Chinese)[5]陈松山,葛强,严登丰,等.泵站竖井进水流道数值模拟与装置特性试验[J].农业机械学报,2006,37(10):58-61.Chen Songshan,Ge Qiang,Yan Dengfeng,et al.Numerical simulation of turbulent flow inside inlet duct and experiment[J].Transactions of the Chinese Society for Agricultural Machinery,2006,37(10):58-61.(in Chinese)[6]王福军.计算流体动力学分析[M].北京:清华大学出版社,2004.[7]Caridad J,Kenyery F.CFD analysis of electric submersible pumps handing two-phase mixtures[J].Transaction of the ASME:Journal of Energy Resource Technology,2004,126(2):99-102.[8]赵万勇,刘天宝,李易松.旋流泵的流动规律[J].排灌机械,2007,25(6):52-55.Zhao Wanyong,Liu Tianbao,Li Yisong,Flow mechanism in votex-pump[J].Drainage and Irrigation Machinery,2007,25 (6):52-55.(in Chinese)[9]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.Shi Weidong,Zhang Qihua,Lu Weigang.Hydraulic design of new-type deep well pump and flow calculation[J].Journal of Jiangsu University:Natural Science Edition,2006,27(6):528-531.(in Chinese)[10]Zhou Weidong,Zhao Zhimei,Lee T S,et al.Investigation of flow through centrifugal pump impellers using computational fluid dynamics[J].International Journal of Rotating Machinery,2003,9(1):49-61.
