Pore-Network Simulation of Drying of Heterogeneous and Stratified Porous Media

Drying of porous materials is a phenomenon that is important to numerous problems in science and technology to remediation and recovery of soil contaminated with hydrocarbons to recovery of volatile hydrocarbons from oil reservoirs, cosmetics, building restoration, and such material processing as the production of food, wood, paper, textiles, pharmaceuticals, and washing powders. M. A. Knackstedt et al. demonstrated that the extended correlations at core scale are also well approximated by a Fractional Browning motion. A. G. Yiotis et al. showed that both advection and capillarity affect the drying patterns and rates. Thus, assume slow flow of the liquid in the pore-network (PN). Mass transfer in the vapor phase is by diffusion, for which the driving force is the concentration gradient alongside the drying front. The invasion of the PN by the drying front increases the resistance imposed by the emptied larger throats in the dried regions.

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Pore-Network Simulation of Drying of Heterogeneous and Stratified Porous Media