Forcing and velocity correlations in a vibrated granular monolayer

被引：89

作者：

Prevost, A ^{[1
]}

Egolf, DA ^{[1
]}

Urbach, JS ^{[1
]}

机构：

[1] Georgetown Univ, Dept Phys, Washington, DC 20057 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 08期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.89.084301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The role of forcing on the dynamics of a vertically shaken granular monolayer is investigated. Using a flat plate, surprising negative velocity correlations are measured. A mechanism for this anticorrelation is proposed with support from both experimental results and molecular dynamics simulations. Using a rough plate, velocity correlations are positive, and the velocity distribution evolves from a Gaussian at very low densities to a broader distribution at high densities. These results are interpreted as a balance between stochastic forcing, interparticle collisions, and friction with the plate.

引用

页码：1 / 084301

页数：4

共 12 条

[1] Transport coefficients for granular media from molecular dynamics simulations [J].