A parametric study of axial segregation in granular systems

被引：7

作者：

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

Gladysz, G. M. ^{[1
]}

Graham, A. L. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

CHEMICAL ENGINEERING SCIENCE | 2007年 / 62卷 / 16期

关键词：

particle; transport processes; powder technology; mathematical modeling; particle segregation; particle transport;

D O I：

10.1016/j.ces.2006.04.030

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

When a cylindrical container, partially filled with a binary granular mixture of particles that differ in size or density, is rotated around its axis, a spontaneous segregation of the two granular components may occur. In order to better understand this phenomenon, we have carried out an experimental study probing the effect of average particle size and relative size difference between particles on the onset of segregation. The experimental study is followed by a novel scaling analysis which relates the deterministic, convective driving force for particle segregation to the randomizing diffusional driving force present in these systems through the definition of an axial granular Peclet number. Values of this granular Peclet number are shown to successfully correlate with segregation behavior in the present study, as well as in comparable results in the literature. (c) 2006 Published by Elsevier Ltd.

引用

页码：4177 / 4181

页数：5

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