F222 地中隔離における多孔質内超臨界CO_2/水二相流動LBM解析(OS-6:多孔質の最近の進展(3))

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  • F222 Lattice Boltzmann Method of Supercritical-CO_2/Water Two Phase Flow in CO_2 Geological Sequestration

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CO_2 geological sequestration is considered as one of the effective technology to mitigate global warming by reducing carbon dioxide (CO_2) emission into the atmosphere. However, density difference between CO_2 and water causes buoyancy effect and CO_2 migrates slowly upward in the aquifer. In order to clarify the fundamental mechanism of CO_2 migration, microscopic study of immiscible two-phase flow of CO_2 and water in porous media is necessary. In this study, Lattice Boltzmann method (LBM) for supercritical-CO_2/water two-phase flow in a porous media has been performed under geological storage condition. Migration process of CO_2 droplet was visualized and analyzed in micro pore scale.

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