Numerical Investigation on Impeller-Volute Interaction In a Low Specific Speed Centrifugal Pump with Tongue Profile Variation

摘要：

Numerical simulations on impeller-volute interactions in a low specific speed centrifugal pump equipped with variable tongue profiles were carried out using the commercial code CFX-10.The numerical results indicated that the influence of the different tongue profiles on the performance and operation stability of the centrifugal pump is very remarkable. The highefficiency range of the centrifugal pump can be widened to some extent while the profile of the tongue is replaced from sharp tongue to middle tongue, and the maximum efficiency point is shifted along the higher flow rate direction. The operation stability of the centrifugal pump may be influenced while the fluid flows in the diffuser of the centrifugal pump with short tongue. The amplitude of pressure fluctuation in the tongue zone drops notably while the pump equipping with the middle tongue or the short one is in running.

关键词： low specific speed centrifugal pump tongue profile variation numerical investigation

作者: Pengcheng Guo Xingqi Luo Jinglin Lu Xiaobo Zheng

作者单位: Dept. of Hydropower Engineering, Xian University of Technology, Pillar Box 207, No.5 South Jinhua Road, Xian 710054, China

会议类型: 国际会议

会议名称: The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)

会议地点: 北京

会议语种:英文

页码: 310-315

在线出版日期: 2008-11-25（万方平台首次上网日期，不代表论文的发表时间）