%0 Journal Article
%T Self-diffusion in granular gases: An impact of particles' roughness
%A Anna Bodrova
%A Nikolai Brilliantov
%J Physics
%D 2012
%I arXiv
%X An impact of particles' roughness on the self-diffusion coefficient in granular gases is investigated. For a simplified collision model where the normal and tangential restitution coefficients are assumed to be constant we develop an analytical theory for the diffusion coefficient, which takes into account non-Maxwellain form of the velocity-angular velocity distribution function. We perform molecular dynamics simulations for a gas in a homogeneous cooling state and study the dependence of the self-diffusion coefficient on restitution coefficients. Our theoretical results are in a good agreement with the simulation data.
%U http://arxiv.org/abs/1201.3524v2