Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques
arXiv:0804.2218 · doi:10.1103/PhysRevE.78.016706
Abstract
The viscosity and self-diffusion constant of particle-based mesoscale hydrodynamic methods, multi-particle collision dynamics (MPC) and dissipative particle dynamics (DPD), are investigated, both with and without angular-momentum conservation. Analytical results are derived for fluids with an ideal-gas equation of state and a finite-time-step dynamics, and compared with simulation data. In particular, the viscosity is derived in a general form for all variants of the MPC method. In general, very good agreement between theory and simulations is obtained.
12 pages, 9 figures