A model for the atomic-scale structure of a dense, nonequilibrium fluid:   the homogeneous cooling state of granular fluids
  It is shown that the equilibrium Generalized Mean Spherical Model of fluid structure may be extended to nonequilibrium states with equation of state information used in equilibrium replaced by an exact condition on the two-body distribution function. The model is applied to the homogeneous cooling state of granular fluids and upon comparison to molecular dynamics simulations is found to provide an accurate picture of the pair distribution function. 
James F. Lutsko