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Updated: Jul 2, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques
Hiroshi Noguchi1, Gerhard Gompper
1Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany. noguchi@issp.u-tokyo.ac.jp
Abstract:
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.
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