Coarse-Graining and Scaling in Dissipative Particle Dynamics

TL;DR

This paper demonstrates that dissipative particle dynamics (DPD) can be a truly scale-free method for simulating soft matter systems by proposing a new scaling scheme that overcomes previous limitations.

Contribution

It introduces a novel scaling scheme that enables DPD to be applicable across any desired length scale, reaffirming its scale-free nature.

Findings

DPD's applicability can be extended to the entire mesoscopic range

A new scaling scheme allows for flexible DPD simulations

DPD remains a valid method for soft matter modeling

Abstract

Dissipative particle dynamics (DPD) is now a well-established method for simulating soft matter systems. However, its applicability was recently questioned because some investigations showed an upper coarse-graining limit that would prevent the applicability of the method to the whole mesoscopic range. This article aims to reestablish DPD as a truly scale-free method by analyzing the problems reported by other authors and by presenting a scaling scheme that allows one to gauge a DPD-simulation to any desired length scale.