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Thermodynamic properties of short-range square well fluid.

López-Rendón R, Reyes Y, Orea P

Departamento de Química UAM-Iztapalapa, Avenida San Rafael Atlixco 186, 09340 México D.F., México.

The interfacial properties of short-range square well fluid with lambda=1.15, 1.25, and 1.375 were determined by using single canonical Monte Carlo simulations. Simulations were carried out in the vapor-liquid region. The coexistence curves of these models were calculated and compared to those previously reported in the literature and good agreement was found among them. We found that the surface tension curves for any potential model of short range form a single master curve when we plot gamma* vs TT(c). It is demonstrated that the critical reduced second virial coefficient B(2)* as a function of interaction range or T(c)* is not constant.

Published 12 September 2006 in J Chem Phys, 125(8): 084508.
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