Journal of Thermodynamics

Mikhail Panfilov ¹, Alexandre Koldoba ²

Affiliations
1 Laboratoire d'Energetique et de Mecanique Theorique et Appliquee, CNRS-UMR 7563, Universite de Lorraine, 54500 Nancy, FR
2 Laboratory of Fluid Dynamics and Seismics, Moscow Institute of Physics and Technology (State University), Dolgoprudny 141700, RU

Abstract

To describe phase equilibrium of mixtures,we develop a non classical approach based on using different equations of state for gas and liquid. We show that not all the types of EOS are admissible but only those which verify some specific conditions of consistency. We developed the mathematical theory of this new approach for pure cores and for mixtures, in presence and absence of capillary forces, which leads to explicit analytical relationships for phase concentrations of chemical components. Several examples of comparison with experimental data for binary and ternary mixtures illustrate the feasibility of the suggested approach.

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