Virial coefficients and vapor-liquid equilibria of the EXP6 and 2-Yukawa fluids

TL;DR

This paper calculates virial coefficients and vapor-liquid equilibria for EXP6 and 2-Yukawa fluids using numerical and simulation methods, establishing 2Y as a suitable reference for EXP6 models.

Contribution

It provides new virial coefficients and vapor-liquid data for EXP6 and 2Y fluids, validating 2Y as a reference model for EXP6.

Findings

Virial coefficients B2-B4 determined for both fluids.

Vapor-liquid equilibria established via Gibbs ensemble simulations.

2-Yukawa models are validated as reference fluids for EXP6.

Abstract

Virial coefficients $B_2$ through $B_4$ and the vapor-liquid equilibria for the EXP6 and 2-Yukawa (2Y) fluids have been determined using numerical integrations and Gibbs ensemble simulations, respectively. The chosen 2Y models have been recently determined as an appropriate reference fluid for the considered EXP6 models.