Abstract
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.
