摘要
从磨损机理出发,基于计算流体力学(CFD)软件Fluent中的离散相模型对固液分离旋流器壁面磨损进行了数值模拟研究,主要分析了底流口直径大小对旋流器壁面磨损的位置及磨损率的影响。模拟结果表明:固液分离旋流器的最大磨损在底流口位置,旋流器入口环形空间壁面的磨损率不随底流口直径的改变而改变,圆筒体和圆锥体壁面的磨损率随着底流口直径的增大而减小,圆锥体底部磨损率的减少尤为突出,同时底流口直径的增加使得底流口位置的壁面磨损在周向方向上更加均匀。这些模拟结果为固液分离旋流器结构的优化设计提供一定的指导。
From the attrition theory and base on CFD method,the wall attrition of solid-liquid separation cyclones was simulated by using the discrete phase model in fluent software,mainly analyze the effect of bottom orifice diameter on the wall attrition position and extent in the solid-liquid separation cyclone.The results showed that the maximum wall attrition of solid-liquid separation cyclone appears in the bottom orifice position.The wall attrition rate of entrance annular space of cyclone did not change with the diameter of bottom orifice,but to the cylinder and cone,it decreased along with the diameter of increase,especially in the bottom of cone.At the same time,the wall attrition of bottom orifice was more uniform in the circumferential direction with the diameter of bottom orifice increases.These simulation results would provide some guidance to the optimization design of solid-liquid separation cyclone structure.
出处
《食品工业》
北大核心
2017年第11期228-232,共5页
The Food Industry
关键词
固液旋流器
底流口直径
磨损
数值模拟
solid-liquid cyclone
bottom orifice diameter
wall attrition
numerical simulation
