排灌机械工程学报Issue(10)：840-844,5.DOI:10.3969/j.issn.1674-8530.13.0258
颗粒直径对渣浆泵冲蚀磨损性能的影响
Effects of particle diameter on erosion wear performance of slurry pump
摘要
Abstract
In order to investigate the influence of particle diameter on erosion wear performance of slur-ry pump delivering solid-liquid two-phase flow medium,the motion trajectory of particles with diffe-rent particle diameter is calculated based on Lagrange method,k-εturbulence model,discrete phase zero equation model and Finnie ductile materials erosion model.The impact velocity,impact angle and other parameters between solid particle and machine surface were evaluated by numerical simulation, and the wear rule of solid-liquid two-phase flow in slurry pump are discussed.According to the simu-lation results,the particles with small diameter distributed relatively uniform in the flow path,had a very small probability of in collision with the hydraulic components,and the erosion wear of the blade was relatively weak.By contrary,the solid particle with large diameter was apt to move toward to the pressure surface and impacted the leading edge of the blade.The impact angle and velocity of the parti-cles with large diameter was greater to the blades and the volute circumferential wall than the small ones,and the erosion wear of the blade was relatively strong.And the large particles might in collision with the hydraulic components many times in the flow channel,causing serious erosion.关键词
渣浆泵/固液两相流/冲蚀磨损/运动轨迹/数值模拟Key words
slurry pump/solid-liquid two-phase flow/solid-liquid erosion/motion trajectory/numerical simulation分类
农业科技引用本文复制引用
汪家琼,叶群,闫科委,冯耀宁,余旭男..颗粒直径对渣浆泵冲蚀磨损性能的影响[J].排灌机械工程学报,2014,(10):840-844,5.基金项目
“十二五”国家科技支撑计划项目（2013BAK06B02）；国家自然科学基金资助项目 （）
