排灌机械工程学报2024，Vol.42Issue(8)：794-801,8.DOI:10.3969/j.issn.1674-8530.23.0139
含沙水流下水翼磨损形貌试验研究
Experimental study of erosion wear on hy-drofoils with emphasis on wear morphology
摘要
Abstract
Erosion wear is a major challenge for hydraulic machinery operating in sediment-laden rivers.Erosion wear tests were conducted on a hydrofoil at 0° of attack with five different flow rates(143,153,163,173,and 183 m3/h),and an optical microscope was used together with an optical 3D profiler to improve the understanding of the wear morphologies.The results show four main wear morphologies on the hydrofoil which includes pits,smooth grooves,sharp grooves,and scratches.Additionally,iridescent rings and ripple patterns are observed.On the leading edge of the hydrofoil,pits and smooth grooves are mainly observed.Four wear morphologies and iridescent rings are discovered as well in the middle of hydrofoil.On the trailing edge,pits,sharp grooves,and ripple patterns are found.The dominant wear mechanisms and sub-mechanisms on the hydrofoil are surface fatigue(indenting),abrasion(microploughing,micro-cutting,and sliding),and tribochemical reactions(heating).关键词
水力机械/水翼/泥沙磨损/磨损形貌Key words
hydraulic machinery/hydrofoil/erosion wear/wear morphology分类
农业科技引用本文复制引用
钟琴琴,钱忠东..含沙水流下水翼磨损形貌试验研究[J].排灌机械工程学报,2024,42(8):794-801,8.基金项目
National Natural Science Foundation of China(52279090,51779186) （52279090,51779186）
