流体机械2011，Vol.39Issue(2)：35-39,5.DOI:10.3969/j.issn.1005-0329.2011.02.008
叶片泵旋转失速的研究进展
Overview for Research on Rotating Stall of Pump
摘要
Abstract
The discoveries about the rotating stall of the pumps were summarized according to previous researches. It contains the methods, results and suppression of rotating stall using CFD or PIV and combing with experimental methods. Most of the researches focus on the flow structures and pressure fluctuation and propagation when the rotating stall occurs. There are alternate reverse flow and jet flow because of the alternate high pressure region and low pressure region in the diffuser passage. It also appears high speed leakage in the clearance between the impeller and diffuser. Under stall condition it will be found that pressure fluctuation and propagation and part of the dramatic change pressure is about 0.7 percent of the impeller rotating speed as the same direction of the impeller rotating. In addition, most of the researches have found that the rotating stall occurs when there is a change in the slop of the performance curve. Finally, it suggests two possible ways to suppress the rotating stall in the pumps.关键词
旋转失速/流动结构/压力波动/J型槽Key words
rotating stall/ flow structures/ pressure fluctuation /J-grooves分类
机械制造引用本文复制引用
潘中永,李俊杰,李红,刘威..叶片泵旋转失速的研究进展[J].流体机械,2011,39(2):35-39,5.
