Towards Better Integrators for Dissipative Particle Dynamics Simulations

Abstract

Coarse-grained models that preserve hydrodynamics provide a natural approach to study collective properties of soft-matter systems. Here, we demonstrate that commonly used integration schemes in dissipative particle dynamics give rise to pronounced artifacts in physical quantities such as the compressibility and the diffusion coefficient. We assess the quality of these integration schemes, including variants based on a recently suggested self-consistent approach, and examine their relative performance. Implications of integrator-induced effects are discussed.

4 pages, 3 figures, 2 tables, accepted for publication in Phys. Rev. E (Rapid Communication), tentative publication issue: 01 Dec 2000

References in corpus (2)

• From Molecular Dynamics to Dissipative Particle Dynamics
• Finite-difference methods for simulation models incorporating non-conservative forces

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