流体机械Issue(3)：19-23,5.DOI:10.3969/j.issn.1005-0329.2014.03.005
混流泵径向间隙对内部非定常流场影响的分析
Effect of Volute Tongue-impeller Gaps on the Unsteady Flow in Mixed-flow Pump
摘要
Abstract
The three-dimensional steady and unsteady numerical method was applied to simulate the flow in the mixed-pump with different volute casings.The base circle diameters of three volute casings were 280 mm,290mm and 300mm,the characters of the pressure fluctuation were obtained with different base circle diameters.The results show that the pressure pulsation presen-ted an obvious periodicity.At the same flow rate,the smaller the radial clearance,the larger frequency domain of pressure fluctu-ation at each monitoring point.The fluctuation amplitude near the volute tongue is larger than other points.For the mixed-pump with 290mm volute base circle diameters its performance experiments and numeric simulations were done.The calculated results are in good agreement with measurement results.Numerical simulation is believable.关键词
混流泵/非定常流动/间隙/压力脉动Key words
mixed-flow pump/unsteady flow/gap/pressure fluctuation分类
机械制造引用本文复制引用
刘建瑞,郑俊峰,付登鹏,王鹏..混流泵径向间隙对内部非定常流场影响的分析[J].流体机械,2014,(3):19-23,5.基金项目
国家科技支撑计划项目（2011BAF14B02）；江苏省科技支撑计划项目 （）
