Non-Newtonian shear viscosity in a dense system of hard disks
  In the present work a simple kinetic model based on the Enskog equation is solved to get the rheological properties of a hard-disk fluid under shear far from equilibrium, as functions of the density and shear rate. Comparison with Monte Carlo simulations of the Enskog equation show excellent agreement. 
J.M. Montanero, A. Santos (Universidad de Extremadura, Badajoz, Spain)