Liquid-vapor interface of square-well fluids of variable interaction range |
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| Authors: | Orea Pedro Duda Yurko Weiss Volker C Schröer Wolffram Alejandre José |
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| Affiliation: | Ingeniería Molecular, Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, 07730 México D.F., México. |
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| Abstract: | Properties of the liquid-vapor interface of square-well fluids with ranges of interaction lambda=1.5, 2.0, and 3.0 are obtained by Monte Carlo simulations and from square-gradient theories that combine the Carnahan-Starling equation of state for hard spheres with the second and third virial coefficients. The predicted surface tensions show good agreement with the simulation results for lambda=2 and for lambda=3 in a temperature range reasonably close to the critical point, 0.8
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