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

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.
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Conference papers
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  • HAL Id : ineris-01855574, version 1

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Jianwei Guo, Michel Quintard, Farid Laouafa. Upscaling and large-scale modeling of the dissolution of gypsum cavities. 12. Journées d'études des milieux poreux 2014, Oct 2014, Toulouse, France. pp.84-85. ⟨ineris-01855574⟩

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