Interacting Lattice Gas Automaton Study of Liquid-Gas Properties in Porous Media - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal de Physique II Année : 1996

Interacting Lattice Gas Automaton Study of Liquid-Gas Properties in Porous Media

V. Pot
  • Fonction : Auteur
C. Appert
A. Melayah
  • Fonction : Auteur
D. Rothman
  • Fonction : Auteur
Stéphane Zaleski

Résumé

We describe how lattice-gas cellular automata may be used to simulate evaporation phenomena in models of porous media constructed at the pore scale. Two-dimensional simulations of evaporation are performed in simple channel geometries and in a model of a microscopically disordered porous medium. We describe a variant of the lattice pas, called the liquid-gas model. By static and dynamic tests we show that this model can simulate low Reynolds number mechanical and thermodynamical equations for isothermal evaporation in a real system made of a single-species liquid in equilibrium with its vapor. From static simulations in simple geometries we obtain equilibrium pressures on both sides of meniscus. These are seen to obey the Gibbs-Thomson relations, which are equivalent to the Kelvin effect. We observe evaporation in simple capillary channels and compare the results to a simple theory based on Poiseuille flow. An unexpected effect is additional flow in the wetting films and sharp density jumps. In simulations of evaporation in disordered geometries, we observe bursting and convoluted interaces as previously reported in laboratory experiments.

Domaines

Articles anciens
Fichier principal
Vignette du fichier
ajp-jp2v6p1517.pdf (2.95 Mo) Télécharger le fichier
Origine : Accord explicite pour ce dépôt

Dates et versions

jpa-00248388 , version 1 (04-02-2008)

Identifiants

Citer

V. Pot, C. Appert, A. Melayah, D. Rothman, Stéphane Zaleski. Interacting Lattice Gas Automaton Study of Liquid-Gas Properties in Porous Media. Journal de Physique II, 1996, 6 (10), pp.1517-1534. ⟨10.1051/jp2:1996145⟩. ⟨jpa-00248388⟩

Collections

AJP
60 Consultations
86 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More