Abstract： In order to improve the head and efficiency of vortex pumps, numerical simulation and experimental research of influence of hems on performance of a vortex pump was carried out. Something was got by contrasting three kinds of blades with different sizes hems on performance of the pump. The model was designed by Pro/E considering impeller and volute as a whole and with unstructured grid generation technique. The numerical results by contrasting the calculated values of three different hems show that the internal flow includes longitudinal and transverse vortices，and hems can improve the flow patterns inside the pump and restrict the transformation of radial flow to axial one. The influence of hems on vortex pump′s performance was discussed. The experimental results show that the head increases by 3.64 m and the efficiency increases by 7.0%. The research shows that hem can reduce the loss of hydraulic and improve head and efficiency.
朱荣生， 苏保稳， 王秀礼， 殷勇钢. 折边对旋流泵性能影响的数值计算与试验[J]. 排灌机械工程学报, 2010, 28(5): 398-401.
Zhu Rongsheng, Su Baowen, Wang Xiuli, Yin Yonggang. Numerical simulation and experiment of influence of hem on performance of vortex pump. Journal of Drainage and Irrigation Machinery Engin, 2010, 28(5): 398-401.
[1]关醒凡.现代泵技术手册[M].北京:宇航出版社,1995:234-238.[2]汪永志,施卫东,董颖,等.旋流泵的研究现状与展望[J].排灌机械,2004,22(2):8-11.Wang Yongzhi,Shi Weidong,Dong Ying,et al.Present status and development prospect of vortex pump[J].Drainage and Irrigation Machinery,2004,22(2):8-11.(in Chinese)[3]陈红勋.旋流泵叶轮内部旋转流场的测试[J].农业机械学报,1996,27 (12):49-54.Chen Hongxun.Measurement of rotating flow field within vortex pump impeller[J].Transactions of the Chinese Society for Agricultural Machinery,1996,27 (12):49-54.(in Chinese)[4]郑铭,袁寿其.旋流泵结构参数对泵性能的影响[J].农业机械学报,2000,31(2):46-49.Zheng Ming,Yuan Shouqi.Influence of structural parameter of a vortex pump on its performance[J].Transactions of the Chinese Society for Agricultural Machinery,2000,31(2):46-49.(in Chinese)[5]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.[6]夏朋辉,刘树红,吴玉林.旋流泵全流道三维定常流场的数值模拟[J].工程热物理学报,2006,27(3):420-422.Xia Penghui,Liu Shuhong,Wu Yulin.Numerical simulation of steady flow in vortex pump[J].Journal of Engineering Thermophysics,2006,27(3):420-422.(in Chinese)[7]杨敏官,高波,顾海飞,等.旋流式模型泵内部三维湍流场的测量[J].排灌机械,2008,26(1):60-63.Yang Minguan,Gao Bo,Gu Haifei,et al.Measurement on 3D turbulent flow field in vortex pump[J].Drainage and Irrigation Machinery,2008,26(1):60-63.(in Chinese)[8]Spann J,Horgan S.The evolution of pump design simulation[J].World Pumps,2006(216):32-35.[9]Hornsby C.CFD-driving pump design forward[J].World Pumps,2002(156):18-22.[10]Thomas P.Effects of impeller geometry on reliability and costs of wastewater pumps[J].World Pumps,2004(189):34-38.[11]Sakr S A.Type curves for pumping test analysis in coastal aquifers[J].Ground Water,2001,39(1):5-9.
