Liquid phase parametrisation and solidification in many-body dissipative particle dynamics

Abstract

Many-body dissipative particle dynamics (MDPD) is a mesoscale method capable of reproducing liquid-vapour coexistence in a single simulation. Despite having been introduced more than a decade ago, this method remains broadly unexplored and, as a result, relatively unused for modelling of industrially important soft matter systems. In this work, we systematically investigate the structure and properties of an MDPD fluid. We show that, besides the liquid phase, the MDPD potential can also yield a gas phase and a thermodynamically stable solid phase with a bcc lattice, but lacking a proper stress-strain relation. For the liquid phase, we determine the dependence of density and surface tension on the interaction parameters, and devise a top-down parametrisation protocol for real liquids.

arXiv comment8 pages, 6 figures, updated tables, published version

References in corpus (3)

• Perspective: Dissipative Particle Dynamics
• Vapour-liquid coexistence in many-body dissipative particle dynamics
• Dissipative particle dynamics for interacting systems

Cited by in corpus (7)

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• Many-Body Dissipative Particle Dynamics with the MARTINI "Lego" approach
• Phase Transitions of Oscillating Droplets on Horizontally Vibrating Substrates
• Coarse-Grained Model of the Sodium Dodecyl Sulfate Anionic Surfactant Based on the MDPD--Martini Force Field