Transport properties of dense dissipitive hard-sphere fluids for arbitrary energy loss models

Details Transport properties of dense dissipitive hard-sphere fluids for arbitrary energy loss models Transport properties of dense dissipitive hard-sphere fluids for arbitrary energy loss models

2005-03-14

arxiv.org/abs/cond-mat/0503307v2

PRE 72, 021306 (2005)

Physics

Condensed Matter

Soft Condensed Matter

27 pages + 1 figure

Scientific paper

10.1103/PhysRevE.72.021306

The revised Enskog approximation for a fluid of hard spheres which lose energy upon collision is discussed for the case that the energy is lost from the normal component of the velocity at collision but is otherwise arbitrary. Granular fluids with a velocity-dependent coefficient of restitution are an important special case covered by this model. A normal solution to the Enskog equation is developed using the Chapman-Enskog expansion. The lowest order solution describes the general homogeneous cooling state and a generating function formalism is introduced for the determination of the distribution function. The first order solution, evaluated in the lowest Sonine approximation, provides estimates for the transport coefficients for the Navier-Stokes hydrodynamic description. All calculations are performed in an arbitrary number of dimensions.

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