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Upscaling and large-scale modeling of the dissolution of gypsum cavities

Guo, Jianwei and Quintard, Michel and Laouafa, Farid Upscaling and large-scale modeling of the dissolution of gypsum cavities. In: 12èmes Journées d'Études des Milieux Poreux 2014, 9 October 2014 - 10 October 2014 (Toulouse, France).

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Official URL: http://jemp2014.sciencesconf.org

Abstract

The dissolution of geological formations containing gypsum can rapidly create various karstic features, and may potentially generate great risks such as subsidence and collapse [1]. To understand the gypsum dissolution mechanism is very important to develop safety measures. It is not feasible to take into account all the pore-scale details at a large-scale by direct numerical modeling, and some sort of macro-scale models are essential. Such a macro-scale porous medium model can also serve as a diffuse interface model to describe the dissolution at a fluid/solid interface, as done in [2]. The objective of this study is to develop a macro-scale model, starting from the pore-scale transport problem with boundary condition corresponding to non-linear reaction or thermodynamic equilibrium, making use of the method of volume averaging [3], and then implement it for a large-scale cavity dissolution modeling.

Item Type:Conference or Workshop Item (Speech)
Audience (conference):National conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
French research institutions > Institut National de l'Environnement Industriel et des Risques - INERIS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Jianwei GUO
Deposited On:20 Oct 2014 14:43

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