Modeling capillary condensation hysteresis cycles in reconstructed porous media

Authors

  • František Štěpánek,

    1. Dept. of Chemical Engineering, Prague Institute of Chemical Technology, Technická 5, 166 28 Praha 6, Czech Republic
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  • Miloš Marek,

    Corresponding author
    1. Dept. of Chemical Engineering, Prague Institute of Chemical Technology, Technická 5, 166 28 Praha 6, Czech Republic
    • Dept. of Chemical Engineering, Prague Institute of Chemical Technology, Technická 5, 166 28 Praha 6, Czech Republic
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  • Pierre M. Adler

    1. Institut de Physique du Globe de Paris, 4 place Jussieu, 75 252 Paris CEDEX 05, France
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Abstract

A computational algorithm for tracking liquid–vapor interfaces moving with curvature-dependent velocity, based on the Gibbs energy formulation and the level-set approach, is described. The algorithm is used for finding equilibrium distributions of condensate in several samples of 3-D reconstructed porous media under varying relative saturation of the surrounding atmosphere. Primary and higher-order hysteresis cycles are calculated and their dependence on various physico-chemical parameters (temperature, wetting angle) as well as on geometrical properties of the porous medium is investigated. An explanation of the influence of the morphology of a porous medium on the character of corresponding hysteresis loops is provided.

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