Steady-State Properties of Driven Polydisperse Granular Mixtures

We represent a two-dimensional model of polydisperse granular mixtures with a power-law size distribution. The model consists of smooth hard disks in a rectangular box with inelastic collisions, driven by a homogeneous heat bath at zero gravity. The width of particle size distribution is characteriz...

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Published inCommunications in theoretical physics Vol. 56; no. 12; pp. 1145 - 1148
Main Author 李睿 张端明 肖明 李志浩
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.12.2011
Subjects
Disks
Fractal analysis
Gravitation
Inelastic collisions
Mathematical models
Particle size distribution
Two dimensional
Velocity distribution
二维模型
分形维数
分散颗粒
混合物
电子邮件
稳态特性
粒度分布
非弹性碰撞
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ISSN0253-6102
DOI10.1088/0253-6102/56/6/30

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Summary:We represent a two-dimensional model of polydisperse granular mixtures with a power-law size distribution. The model consists of smooth hard disks in a rectangular box with inelastic collisions, driven by a homogeneous heat bath at zero gravity. The width of particle size distribution is characterized by the only parameter, namely, the fractal dimension D. The energy dissipation of the mixture is increased as D increases or as e decreases. Furthermore, it is found that the steady-state properties of the mixture such as the collision rate, granular temperature, kinetic pressure and velocity distribution depend sensitively on size distribution parameter D.
Bibliography:We represent a two-dimensional model of polydisperse granular mixtures with a power-law size distribution. The model consists of smooth hard disks in a rectangular box with inelastic collisions, driven by a homogeneous heat bath at zero gravity. The width of particle size distribution is characterized by the only parameter, namely, the fractal dimension D. The energy dissipation of the mixture is increased as D increases or as e decreases. Furthermore, it is found that the steady-state properties of the mixture such as the collision rate, granular temperature, kinetic pressure and velocity distribution depend sensitively on size distribution parameter D.
11-2592/O3
fractal dimension, polydisperse mixtures
LI Rui,ZHANG Duan-Ming, XIAO Ming,LI Zhi-Hao （1 Department of Physics, Hubei University of Education, Wuhan 430205, China 2Department of Physics, Huazhong University of Science and Technology, Wuhan 430074, China）
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ISSN:0253-6102
DOI:10.1088/0253-6102/56/6/30