华中科技大学学报（自然科学版）2024，Vol.52Issue(7)：139-144,6.DOI:10.13245/j.hust.240724
凹槽结构对离心泵空化特性的影响
Influence of cavitation characteristics of groove structure for centrifugal pump
摘要
Abstract
Taking the low specific speed centrifugal pump as the research object,and a method to suppress cavitation by arranging a groove structure on the leading edge of the blade was proposed.The modified SST k-ω turbulence model and the Zwart-Gerber-Belamri(Z-G-B)cavitation model was combined to perform numerical simulations of the centrifugal pump,and the simulations were compared with experimental results.The results show that the centrifugal pump and reduces the critical cavitation margin.At different cavitation stages,the vortex intensity is reduced,the flow state of the surrounding flow field is optimized,relative high pressure is induced,and the vorticity field is improved.The bubble volume of centrifugal pumps under various cavitation margins is reduced,and the main frequency amplitude of pressure pulsation at multiple monitoring points is reduced.The groove structure effectively limits the cavitation development of the centrifugal pump,making the operation of the pump more stable.关键词
离心泵/空化特性/凹槽结构/数值模拟/压力脉动Key words
centrifugal pump/cavitation characteristics/groove structure/numerical simulation/pressure fluctuation分类
机械制造引用本文复制引用
赵伟国,张栩,杨良,李家豪..凹槽结构对离心泵空化特性的影响[J].华中科技大学学报（自然科学版）,2024,52(7):139-144,6.基金项目
国家自然科学基金资助项目(52169018) （52169018）
中央引导地方科技发展资金资助项目(23ZYQA0320) （23ZYQA0320）
甘肃省教育厅产业支撑计划资助项目(2021CYZC-27). （2021CYZC-27）
