东南大学学报（英文版）2017，Vol.33Issue(4)：391-397,7.DOI:10.3969/j.issn.1003-7985.2017.04.002
基于离散元素法的滚筒内颗粒物质分层现象
Particles segregation in rotating drum based on discrete element method
摘要
Abstract
In order to study particle segregation in the rotating drum,the movement of particles is studied by theoretical deduction and numerical simulation.According to the theoretical deduction,particles near the end wall are lifted higher by the friction of the end wall,which leads to small particles gathering in the middle of the drum.The model of particle motion is established based on the discrete element method.It can be shown from the simulation results that the particles accumulated higher near the end wall,which is consistent with the theoretical deduction.In addition,the effects from the aspects of the relative friction between particles,the friction between the end wall and particle,the drum aspect ratio and the rotation speed were explored by the simulation.From the simulation results,it can be pointed out that the friction of the end wall has a decisive influence on the axial segregation of the particles,and the other factors merely affect the accumulate forms of particles.关键词
离散元素法/颗粒物质/轴向分层Key words
discrete element method/granular material/axial segregation分类
通用工业技术引用本文复制引用
伍力,黄鹏,付帅旗..基于离散元素法的滚筒内颗粒物质分层现象[J].东南大学学报（英文版）,2017,33(4):391-397,7.基金项目
The National Natural Science Foundation of China (No.51775109),Jiangsu Science and Technology Support Plan Project (No.BE2014142). （No.51775109）
