Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques.
The viscosity and self-diffusion constant of particle-based mesoscale hydrodynamic methods, multiparticle collision dynamics (MPC), and dissipative particle dynamics, 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.
Noguchi
Hiroshi
H
Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany. noguchi@issp.u-tokyo.ac.jp
Gompper
Gerhard
G