Can cubic equations of state be recast in the virial form?

Abstract : n this paper, we propose a mathematical study of the virial expansion of cubic equations of state. We attempt to provide an answer to the following questions: - Is the virial equation only appropriate for the description of gases at low to moderate densities? - What is the impact of the order of truncation on the representation of P ― ν isotherms? - What is the difference between a truncation at an even order and a truncation at an odd order? - What is the theoretical volume range of validity of a virial expansion? To illustrate and apply these concepts, we considered four classical cubic equations of state, namely: Van der Waals, Redlich―Kwong―Soave, Peng-Robinson and Schmidt-Wenzel. For all of these equations, we detail the limitations and the capabilities of the virial expansions. Finally, we propose a new general relation between the coefficients of the virial equation in pressure and those of the virial equation in density.
Type de document :
Article dans une revue
Fluid Phase Equilibria, Elsevier, 2009, 282 (1), pp.38-50. 〈10.1016/j.fluid.2009.04.011〉
Liste complète des métadonnées

https://hal.archives-ouvertes.fr/hal-00488465
Contributeur : Josiane Moras <>
Soumis le : mercredi 2 juin 2010 - 09:30:01
Dernière modification le : jeudi 3 mai 2018 - 15:32:06

Identifiants

Citation

R. Privat, Y. Privat, J.-N. Jaubert. Can cubic equations of state be recast in the virial form?. Fluid Phase Equilibria, Elsevier, 2009, 282 (1), pp.38-50. 〈10.1016/j.fluid.2009.04.011〉. 〈hal-00488465〉

Partager

Métriques

Consultations de la notice

180