Lack of energy equipartition in homogeneous heated binary granular mixtures

Details Lack of energy equipartition in homogeneous heated binary granular mixtures Lack of energy equipartition in homogeneous heated binary granular mixtures

2002-02-18

arxiv.org/abs/cond-mat/0202297v2

Granular Matter 4 (2002) 57

Physics

Condensed Matter

Statistical Mechanics

8 pages, 9 eps figures, to be published in Granular Matter

Scientific paper

We consider the problem of determining the granular temperatures of the components of a homogeneous binary heated mixture of inelastic hard spheres, in the framework of Enskog kinetic theory. Equations are derived for the temperatures of each species and their ratio, which is different from unity, as may be expected since the system is out of equilibrium. We focus on the particular heating mechanism where the inelastic energy loss is compensated by an injection through a random external force (``stochastic thermostat''). The influence of various parameters and their possible experimental relevance is discussed.

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