Strong breakdown of equipartition in uniform granular mixtures
Abstract
A binary mixture made of heavy and light inelastic hard spheres in the free cooling state is considered. First, the regions in the parameter space where the partial granular temperature of the heavy species is larger (or smaller) than that of the light species are analyzed. Next, the asymptotic behavior of the mean square velocity ratio in the disparate-mass limit is investigated, assuming different scaling laws for the parameters of the mixture. It is seen that two general classes of states are possible: a "normal" state and an "ordered" state, the latter representing a strong breakdown of energy equipartition.
Cite
@article{arxiv.cond-mat/0608604,
title = {Strong breakdown of equipartition in uniform granular mixtures},
author = {Andres Santos and James W. Dufty},
journal= {arXiv preprint arXiv:cond-mat/0608604},
year = {2007}
}
Comments
6 pages, 3 figures; presented in the 25th International Symposium on Rarefied Gas Dynamics (Saint-Petersburg, Russia, July 21-28, 2006)