A polydisperse lattice-gas model

Details A polydisperse lattice-gas model A polydisperse lattice-gas model

2007-09-06

arxiv.org/abs/0709.0889v1

Physics

Condensed Matter

Statistical Mechanics

5 pages, 4 figures (submitted to PRE)

Scientific paper

10.1103/PhysRevE.77.011501

We describe a lattice-gas model suitable for studying the generic effects of polydispersity on liquid-vapor phase equilibria. Using Monte Carlo simulation methods tailored for the accurate determination of phase behaviour under conditions of fixed polydispersity, we trace the cloud and shadow curves for a particular Schulz distribution of the polydisperse attribute. Although polydispersity enters the model solely in terms of the strengths of the interparticle interactions, this is sufficient to induce the broad separation of cloud and shadow curves seen both in more realistic models and experiments.

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