We study a model for an argon-like fluid parameterized in terms of a hard-core repulsion and a two-Yukawa potential. The liquid-gas phase behavior of the model is obtained from the thermodynamically Self-Consistent Ornstein-Zernike Approximation (SCOZA) of Hoye and Stell, the solution of which lends itself particularly well to a pair potential of this form. The predictions for the critical point and the coexistence curve are compared to new high resolution simulation data and to other liquid-state theories, including the hierarchical reference theory (HRT) of Parola and Reatto. Both SCOZA and HRT deliver results that are considerably more accurate than standard integral-equation approaches. Among the versions of SCOZA considered, the one yielding the best agreement with simulation successfully predicts the critical point parameters to within 1%.
Liquid-gas phase behavior of an argon-like fluid modelled by the hard-core two-Yukawa potential / D.E. Pini, G. Stell, N.B. Wilding. - In: THE JOURNAL OF CHEMICAL PHYSICS. - ISSN 0021-9606. - 115:6(2001 Aug), pp. 2702-2708.
Titolo: | Liquid-gas phase behavior of an argon-like fluid modelled by the hard-core two-Yukawa potential |
Autori: | PINI, DAVIDE ENRICO (Primo) |
Parole Chiave: | 2-Yukawa fluid ; Lennard-Jones fluid ; self-consistent Ornstein-Zernike approximation ; Monte Carlo ; critical point ; liquid-vapor transition |
Settore Scientifico Disciplinare: | Settore FIS/03 - Fisica della Materia |
Data di pubblicazione: | ago-2001 |
Rivista: | |
Tipologia: | Article (author) |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1063/1.1383796 |
Appare nelle tipologie: | 01 - Articolo su periodico |
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