轻工机械2025，Vol.43Issue(5)：18-28,11.DOI:10.3969/j.issn.1005-2895.2025.05.003
不同空化状态下离心泵内颗粒磨损机理研究
Mechanisms of Particle Wear in Centrifugal Pumps under Various Cavitation Regimes
摘要
Abstract
In order to investigate the wear characteristics of centrifugal pumps during cavitation,the IS 80-50-250 centrifugal pump was took as the research object.Numerical simulations were conducted using the Discrete Phase Model(DPM),the Schnerr-Sauer cavitation model,and the Oka wear model to analyze erosion patterns under low-concentration sand-laden water conditions under various cavitation states.The effects of cavitation regimes,particle size,and particle density on cavitation dynamics and wear behavior were systematically evaluated.The results indicate that with the intensification of cavitation,the wear of various components in the centrifugal pump are consistent,showing a trend of first increasing and then decreasing;At the same time,when the diameter of solid particles is less than 0.03 mm,solid particles promote the formation of cavitation.When the diameter of solid particles is 0.05 to 0.07 mm,solid particles will inhibit the formation of cavitation,but the wear will increase with the increase of particle diameter;The change in solid particle density will alter the turbulent state in the pump,thereby affecting the distribution of the flow field inside the pump.The higher the particle density,the more severe the wear of various components inside the centrifugal pump.The research results can provide reference for the study of centrifugal pump wear.关键词
离心泵/磨损特性/泥沙磨损/离散相模型:Oka磨损模型Key words
centrifugal pump/wear characteristic/particle wear/DPM(Discrete Phase Model)/Oka wear model分类
机械制造引用本文复制引用
王岩,邵春雷..不同空化状态下离心泵内颗粒磨损机理研究[J].轻工机械,2025,43(5):18-28,11.基金项目
国家自然科学基金(51306087) （51306087）
江苏省自然科学基金(BK20191361) （BK20191361）
江苏省研究生科研与实践创新计划项目(SJCX21_0493). （SJCX21_0493）
