Thermodynamic properties of short-range attractive Yukawa fluid: Simulation and theory

TL;DR

This paper investigates the thermodynamic properties of short-range attractive Yukawa fluids through Monte Carlo simulations and compares the results with theoretical predictions, confirming the law of corresponding states.

Contribution

It provides new simulation data for Yukawa fluids with specific inverse-range parameters and validates the self-consistent Ornstein-Zernike approximation against these results.

Findings

Coexistence curves obey the law of corresponding states.

Linear relationship between critical density and reciprocal critical temperature.

Good agreement between simulation and Ornstein-Zernike approximation.

Abstract

Coexistence properties of the hard-core attractive Yukawa potential with inverse-range parameter kappa=9, 10, 12 and 15 are calculated by applying canonical Monte Carlo simulation. As previously shown for longer ranges, we show that also for the ranges considered here the coexistence curves scaled by the critical density and temperature obey the law of corresponding states, and that a linear relationship between the critical density and the reciprocal of the critical temperature holds. The simulation results are compared with the predictions of the self-consistent Ornstein-Zernike approximation, and a good agreement is found for both the critical points and the coexistence curves, although some slight discrepancies are present.