Stochastic rotation dynamics: A Galilean-invariant mesoscopic model for fluid flow - art. no. 020201

A recently introduced stochastic model for fluid dynamics with continuous v elocities and efficient multiparticle collisions is investigated, and it is shown how full Galilean-invariance can be achieved for arbitrary Mach numb ers. Analytic expressions for the viscosity and diffusion constant are also derived and compared with simulation results. Long-time tails in the veloc ity and stress autocorrelation functions are measured.