MONTE-CARLO SIMULATION OF THE BOLTZMANN-EQUATION FOR UNIFORM SHEAR-FLOW

The Boltzmann equation is numerically solved by means of the Direct Si mulation Monte Carlo method for molecules interacting via repulsive r( -mu)-potentials under uniform shear flow far from equilibrium. The non -Newtonian shear viscosity is found to be rather insensitive to the in teraction model. The results show that the divergence of velocity mome nts of degree equal to or larger than four obtained from an exact solu tion for Maxwell molecules [Phys. Rev. Lett. 71, 3971 (1993)] is also present for other interaction potentials. (C) 1996 American Institute of Physics.