Particle-Based Mesoscale Hydrodynamic Techniques

Abstract

Dissipative particle dynamics (DPD) and multi-particle collision (MPC) dynamics are powerful tools to study mesoscale hydrodynamic phenomena accompanied by thermal fluctuations. To understand the advantages of these types of mesoscale simulation techniques in more detail, we propose new two methods, which are intermediate between DPD and MPC -- DPD with a multibody thermostat (DPD-MT), and MPC-Langevin dynamics (MPC-LD). The key features are applying a Langevin thermostat to the relative velocities of pairs of particles or multi-particle collisions, and whether or not to employ collision cells. The viscosity of MPC-LD is derived analytically, in very good agreement with the results of numerical simulations.

7 pages, 2 figures, 1 table

Cited by in corpus (6)

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• Transport coefficients of off-lattice mesoscale-hydrodynamics simulation techniques
• Relevance of angular momentum conservation in mesoscale hydrodynamics simulations
• Multi-particle collision dynamics modeling of viscoelastic fluids
• Transport coefficients of dissipative particle dynamics with finite time step
• Stochastic Hard-Sphere Dynamics for Hydrodynamics of Non-Ideal Fluids