Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques

Details Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques

2008-04-14

arxiv.org/abs/0804.2218v1

Phys. Rev. E 78, 016706 (2008)

Physics

Condensed Matter

Soft Condensed Matter

12 pages, 9 figures

Scientific paper

10.1103/PhysRevE.78.016706

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.

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