排灌机械工程学报2012，Vol.30Issue(4)：436-441,6.DOI:10.3969/j.issn.1674-8530.2012.04.012
灯泡贯流泵装置内部流动及水力特性
Flow pattern and hydraulic performance of tubular pump
摘要
Abstract
In order to establish a relationship between flow pattern and hydraulic performance of a tubular pump, the flow pattern and hydraulic performance at a low flow rate, best efficiency point' and a high flow rate were investigated by means of flow simulation, performance test and PIV measurement in a tubular pump. The steady flow field in the pump was obtained through solving the time-averaged N - S equations in the multiple reference frames (MRF) with the help of the SIMPLEC algorithm and the RNG k—e turbulence model. The flow patterns in the pump were analyzed at different operating points. There was a large recirculation zone before the blades inlet when the pump operated at the low flow rate. The flow patterns were fine and there was no any reverse flow regions in the pump when it worked at the BEP (Best Efficiency Point) and the high flow rate. The results indicated the hydraulic loss in the suction pipe is similar to that in a normal pipe, but the hydraulic loss in the discharge pipe depended on operating points. A minimum hydraulic loss in the discharge appeared at the BEP. The estimated performance was in agreement with the test data, both the predicted flow patterns and the PIV measurements showed that there was remarked reverse flow region in front of blades near the tip and there existed a large separated flow zone near the hub downstream of blades at the low flow rate. Thus, attention should be paid on the flow pattern in impeller and guide vanes at a low flow rate in the optimal design of such a tubular pump.关键词
贯流泵/流态/水力性能/泵装置/数值模拟Key words
tubular pump/flow pattern/hydraulic performance/pump system/numerical simulation分类
农业科技引用本文复制引用
成立,刘超,B.P.M.van Esch,汤方平,金燕,周济人..灯泡贯流泵装置内部流动及水力特性[J].排灌机械工程学报,2012,30(4):436-441,6.基金项目
国家自然科学基金资助项目(50809057,51179167) （50809057,51179167）
国家基金委国际(地区)合作与交流项目(51010105026) （地区）
教育部留学出国人员科研启动基金资助项目(教外司留[2010] 1561 号) （教外司留[2010] 1561 号）
