Dependence of the liquid-vapor surface tension on the range of interaction: a test of the law of corresponding states

Patrick Grosfils; James F. Lutsko

doi:10.1063/1.3072156

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arXiv · 0807.0107

Dependence of the liquid-vapor surface tension on the range of interaction: a test of the law of corresponding states

Patrick Grosfils·James F. Lutsko

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Abstract

The planar surface tension of coexisting liquid and vapor phases of a fluid of Lennard-Jones atoms is studied as a function of the range of the potential using both Monte Carlo simulations and Density Functional Theory. The interaction range is varied from $r_c^* = 2.5$ to $r_c^* = 6$ and the surface tension is determined for temperatures ranging from $T^* = 0.7$ up to the critical temperature in each case. The results are shown to be consistent with previous studies. The simulation data are well-described by Guggenheim's law of corresponding states but the agreement of the theoretical results depends on the quality of the bulk equation of state.

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Patrick Grosfils, James F. Lutsko. 2008-07-01. Dependence of the liquid-vapor surface tension on the range of interaction: a test of the law of corresponding states. https://doi.org/10.1063/1.3072156

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