基于DEM-CFD耦合仿真的盘棒复合转子研磨特性  

Grinding characteristics of disc-rod composite rotor with DEM-CFD coupling simulation

作　　者：孙飞 吴波 何康 杨权[1,2] 张秀香[1] 孟超 SUN Fei;WU Bo;HE Kang;YANG Quan;ZHANG Xiuxiang;MENG Chao(School of Mechanical and Electronic Engineering,Suzhou University,Suzhou 234000,China;Advanced Micro-nano Wet Grinding School-Enterprise Collaborative Innovation Engineering Center,Suzhou University,Suzhou 234000,China;Anhui Root Industrial Co.,Ltd.,Suzhou 234000,China)

机构地区：[1]宿州学院机械与电子工程学院,安徽宿州234000 [2]宿州学院高端微纳研磨装备校企协同创新工程中心,安徽宿州234000 [3]安徽儒特实业有限公司,安徽宿州234000

出　　处：《邵阳学院学报（自然科学版）》2022年第4期25-32,共8页Journal of Shaoyang University：Natural Science Edition

基　　金：安徽省科技厅自然科学基金资助项目(2108085ME172);宿州学院校级科研平台资助项目(2020ykf13,2020ykf14和2022ykf07);宿州学院校级重点科研资助项目(2021yzd02);宿州学院教师应用能力发展工作站(2020XJYY03);高端微纳研磨装备校企协同创新工程中心资助项目(2021XJPT19ZC)。

摘　　要：为了揭示盘棒复合转子湿法研磨机的研磨特性影响因素,采用DEM-CFD耦合方法,在不同工艺条件下对农药混悬液研磨过程的速度场、颗粒场以及碰撞能量进行了仿真模拟分析。仿真结果表明,研磨机筒体内靠近筒壁处和盘式转子附近速度梯度最大,剪切作用力强,研磨效果较好;研磨过程中起主要作用的是研磨介质颗粒相互接触时切向力;2000 r/min以下转子转速与工作效率成正比,大于2000 r/min时继续提高转子转速会导致研磨机整体工作效率下降。In order to reveal the influencing factors of the grinding characteristics of the disc-rod composite rotor wet grinder,the DEM-CFD coupling method was used to simulate and analyze the velocity field,particle field and collision energy of the pesticide suspension grinding process under different process conditions.The simulation results show that beside the cylinder wall and the disc rotor,it shows the highest velocity gradient,strong shearing force and good grinding effect.The main role in the grinding process is the tangential force when the grinding media particles are in contact with each other.The rotor speed below 2000 r/min is directly proportional to the working efficiency.When the rotor speed is greater than 2000 r/min,continuing to increase the rotor speed will lead to a decrease in the overall working efficiency of the grinder.

关 键 词：湿法研磨 能量 EDEM 耦合 

分 类 号：TD453[矿业工程—矿山机电]