The parameters governing the coefficient of dispersion of cubes in rotating cylinders

被引：14

作者：

Lu, G. ^{[1
]}

Third, J. R. ^{[1
]}

Mueller, C. R. ^{[1
]}

机构：

[1] Swiss Fed Inst Technol, Inst Energy Technol, Dept Mech & Proc Engn, Lab Energy Sci & Engn, Leonhardstr 21, CH-8092 Zurich, Switzerland

来源：

GRANULAR MATTER | 2017年 / 19卷 / 01期

基金：

瑞士国家科学基金会;

关键词：

Granular flow; Non-spherical particle; Axial dispersion; Rotating cylinder; Discrete element modelling (DEM); NONSPHERICAL PARTICLES; GRANULAR-MATERIALS; MOTION; FLOWS; DEM; SIMULATIONS; DIFFUSION; DRUM;

D O I：

10.1007/s10035-016-0693-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Axial dispersion of cubic particles in horizontal, rotating cylinders was investigated using discrete element modelling simulations. We found that, similar to the behavior of spheres, the axial dispersion coefficient of cubes depends on (1) the rotational speed of the cylinder omega, (2) the acceleration due to gravity g and (3) the particle size d, satisfying the relationship D-ax alpha omega(1-2 lambda) g(lambda)d(2-lambda) with lambda approximate to 0.15 (lambda approximate to 0.1 for beds of spheres) (Third et al. in Powder Technol 203: 510-517, 2010). This observation suggested that, although particle shape influences significantly the rate of axial dispersion (cubes disperse almost twice as fast as spheres of equal volume), the parameters controlling the coefficient of dispersion are independent of particle shape.

引用

页数：6

共 21 条

[1] Granular materials composed of shape-anisotropic grains [J].