流体机械2025，Vol.53Issue(3)：61-68,8.DOI:10.3969/j.issn.1005-0329.2025.03.008
叶根圆弧对圆盘泵空化性能的影响
Influence of arcs of the impeller blade roots on the cavitation performance of disc pump
摘要
Abstract
To investigate the impact of the impeller design on the cavitation performance of disc pumps,a blade root arc modification method was introduced for a specific type of disc pump.The simulations employed the SST k-ε turbulence model combined with the Zwart-Gerber-Belamri cavitation model.Verification through external characteristics testing confirmed an error margin within 5%.Analysis of pressure distribution,cavitation volume,and turbulent kinetic energy within the impeller revealed that the blade root arc structure enhances both the head and efficiency of the disc pump.When the cavitation margin is 2.5 m,the head for the blade root arc model was 12.373 3 m,compared to 7.456 6 m for the original model,marking an increase of 65.94%.Under different cavitation margin(2.5,3.0,8.0,12.0 m),the average pressure of the blade root arc model is 1.23%～23.13%higher than that of the original model,The diffusion of the low pressure region is suppressed,and the pressure gradient between the pressure surface and the suction surface of the impeller is reduced,lessens the cavitation volume inside the impeller,significantly reduces turbulent kinetic energy at the impeller outlet,decreases energy dissipation,and stabilizes the flow channel.In conclusion,the blade root arc model notably suppresses cavitation in disc pumps and enhances their hydraulic performance.This study provides some reference for the performance optimization design of disc pump.关键词
圆盘泵/叶根圆弧/空化/数值模拟Key words
disc pump/blade root arc/cavitation/numerical simulation分类
机械工程引用本文复制引用
施芝郑,江启峰,张惟斌,衡亚光,罗西棚,涂云川..叶根圆弧对圆盘泵空化性能的影响[J].流体机械,2025,53(3):61-68,8.基金项目
国家自然科学基金区域联合基金项目(U23A20669) （U23A20669）
四川省科技厅资助项目(2020YFH152) （2020YFH152）
