流体机械Issue(9)：20-24,5.DOI:10.3969/j.issn.1005-0329.2013.09.005
非设计工况下斜流泵叶轮进出口环量变化分析
Circulation Distribution Analysis at Impeller Inlet and Outlet of Mixed-flow Pump in Part-load Operation
摘要
Abstract
The three-dimensional flow field of a mixed-flow pump was calculated with RNG k-εmodel,and the circulations dis-tribution at impeller inlet and outlet in part-load operation were analyzed.The results present that the circulation at impeller inlet was influenced by impeller leading edge at design flow-rate,the circulation distributions were different in sampling lines,and the circulation differences between sampling lines decreased with recirculation appeared at impeller inlet.The circulation distributions at impeller outlet were less influenced by sampling lines location,there was a equal-circulation distribution at impeller outlet in design flow rate.The circulations at the outer of impeller increased obviously in part-load operation,which caused by recircula-tion in impeller outlet.A further investigation presents that the flow recirculation at impeller outlet close to hub has a reverse pe-ripheral velocity vector compare with impeller rotation,the circulation values were even lower then the values at impeller inlet in the same flow-rate.关键词
斜流泵/非设计工况/叶轮/环量分布/数值模拟Key words
mixed-flow pump/part-load operation/impeller/circulation distribution/numerical simulation分类
机械制造引用本文复制引用
欧鸣雄,施卫东,田飞,张德胜..非设计工况下斜流泵叶轮进出口环量变化分析[J].流体机械,2013,(9):20-24,5.基金项目
国家科技支撑计划项目（2011BAF14B01）；江苏省成果转化专项资金项目（BA2011126）；江苏高校优势学科建设工程资助 （）
