Temperature Anisotropy in a Driven Granular Gas
Statistical Mechanics
2007-05-23 v2 Soft Condensed Matter
Abstract
When smooth granular material is fluidized by vertically shaking a container, we find that the temperature in the direction of energy input always exceeds the temperature in the other directions. An analytical model is presented which shows how the anisotropy can be traced back to the inelasticity of the interparticle collisions and the collisions with the wall. The model compares very well with molecular dynamics simulations. It is concluded that any non-isotropic driving of a granular gas in a steady state necessarily causes anisotropy of the granular temperature.
Cite
@article{arxiv.cond-mat/0404174,
title = {Temperature Anisotropy in a Driven Granular Gas},
author = {Devaraj van der Meer and Peter Reimann},
journal= {arXiv preprint arXiv:cond-mat/0404174},
year = {2007}
}
Comments
4 pages, 4 figures