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Liquid-vapour phase behaviour of a symmetrical binary fluid mixture

N. B. Wilding·F. Schmid·P. Nieleba
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Abstract

Using Monte-Carlo simulation and mean field calculations, we study the liquid-vapour phase diagram of a square well binary fluid mixture as a function of a parameter $δ$ measuring the relative strength of interactions between particles of dissimilar and similar species. The results reveal a rich variety of liquid-vapour coexistence behaviour as $δ$ is tuned. Specifically, we uncover critical end point behaviour, a triple point involving a vapour and two liquids of different density, and tricritical behaviour. For a certain range of $δ$, the mean field calculations also predict a `hidden' (metastable) liquid-vapour binodal.

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BibTeXRIS

N. B. Wilding, F. Schmid, P. Nieleba. 1998-01-26. Liquid-vapour phase behaviour of a symmetrical binary fluid mixture. https://doi.org/10.1103/physreve.58.2201

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