Microscopic theoretical calculation of critical exponents in classical fluid mixtures

Caccamo, C. Microscopic theoretical calculation of critical exponents in classical fluid mixtures. Accademia Peloritana dei Pericolanti Classe FF.MM.NN., 69. pp. 135-149.

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Abstract

We show in this paper that microscopic theoretical approaches can be applied with confidence for the determination of phase stability conditions both of model and real multicomponent classical fluid mixtures. We examine the performances of two theories, namely the Mean Spherical Approximation (MSA) and the Hypernetted Chain (HNC) approximation by comparing their results with those of computer simulation and with the available experimental evidence. The two theories agree qualitatively with each other; moreover the MSA, though inconsistent as a theory from the thermodynamic point of view, is capable to predict in a very direct, and rapid manner the essential qualitative features of the phase diagrams of both neutral and charged fluids. Calculations for the critical exponents are reported in such a context, by showing that the MSA approach allows an accurate determination of these quantities and that the result obtained are consistent with the previous literature.

Item Type:	Article
Subjects:	M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Fisiche, Matematiche e Naturali > 1991 > Supplemento 1 M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Scienze Giuridiche, Economiche e Politiche > 1991 > Supplemento 1 M.U.S. - Miscellanea > Atti Accademia Peloritana > Classe di Lettere Filosofia e belle Arti > 1991 > Supplemento 1
Depositing User:	Dr M P
Date Deposited:	01 Oct 2012 10:45
Last Modified:	01 Oct 2012 10:45
URI:	http://cab.unime.it/mus/id/eprint/821

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