Pore-scale Simulations of Pore Clogging and Upscaling with Large Velocities

نویسندگان

  • Anna Trykozko
  • Malgorzata Peszynska
چکیده

Computational modelling of processes at pore-scale allows to get detailed insight into their nature. It also provides tools to improve coarse-scale models in which porous medium is considered as a permeable continuum. In this paper, we use the simulations at microscale combined with an upscaling procedure and describe the impact of small changes in the pore morphology on the macroscale parameters such as porosity and permeability. The changes in pore geometry may occur due to different hydrogeological, geochemical, and biological mechanisms, and may result in significant variations of the permeability. Our computations are based on realistic geometries with randomly simulated effects of pore clogging. Experiments are performed for a wide range of flow rates, thus contributing to further study of nonlinear flow models. 2010 AMS Subject Classification: MSC 76S05 76M45 76M50

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تاریخ انتشار 2014