S. Rjasanow et W. Wagner, A GENERALIZED COLLISION MECHANISM FOR STOCHASTIC PARTICLE SCHEMES APPROXIMATING BOLTZMANN-TYPE EQUATIONS, Computers & mathematics with applications, 35(1-2), 1998, pp. 165-178
A generalized collision mechanism for Boltzmann-type stochastic partic
le schemes is developed. This mechanism is based on the idea of random
weight transfer originating from random discrete velocity models. The
problem of applying the new degrees of freedom for the purpose of var
iance reduction is studied. Some results of numerical experiments are
given.