Spinodal decomposition of off-critical quenches with a viscous phase using dissipative particle dynamics in two and three spatial dimensions

TL;DR

This study uses dissipative particle dynamics to analyze phase separation and domain growth in viscous binary fluids with varying compositions in 2D and 3D, comparing results with lattice-gas simulations.

Contribution

It provides new insights into the effects of viscosity and composition on phase separation dynamics in binary fluids across dimensions.

Findings

Viscous effects influence domain growth rates.

Minority phase concentration affects phase separation.

Comparison shows consistency with lattice-gas simulations.

Abstract

We investigate the domain growth and phase separation of hydrodynamically-correct binary immiscible fluids of differing viscosity as a function of minority phase concentration in both two and three spatial dimensions using dissipative particle dynamics. We also examine the behavior of equal-viscosity fluids and compare our results to similar lattice-gas simulations in two dimensions.