A cellular automaton for segregation during granular avalanches

被引：26

作者：

Marks, Benjy ^{[1
]}

Einav, Itai ^{[1
]}

机构：

[1] Univ Sydney, Sch Civil Engn, Particles & Grains Lab, Sydney, NSW 2006, Australia

来源：

GRANULAR MATTER | 2011年 / 13卷 / 03期

关键词：

Granular flow; Cellular automata; Kinetic sieving; segregation; PARTICLE-SIZE SEGREGATION; FLOW; MIXTURES; MODEL;

D O I：

10.1007/s10035-010-0247-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Segregation is a complex and poorly understood phenomenon that is prevalent in many industrial and natural granular flows. When grains flow down a slope [1-5], are spun in a rotating drum [6-8] or shaken in a box [9], we observe those grains organising into intriguing patterns. Kinetic sieving is the dominant mode of segregation in granular avalanches, where separation of particles occurs according to size. Using a cellular automaton we have modelled kinetic sieving as the swapping of particles in a one-dimensional system. From the cellular automaton we have deduced a continuum model to describe the segregation.

引用

页码：211 / 214

页数：4

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