Abstract
CO_2 geological sequestration is considered as one of the effective technology to mitigate global warming by reducing CO_2 emission into the atmosphere. A new storage method that is using micro or nano scale CO_2 was proposed to realize stable capillary trap in aquifer; however, detail of the mechanism is not clarified. In this study, we employed Lattice Boltzmann Method (LBM) to investigate the two-phase flow in the porous media. In order to realize simulation of micro-scale CO_2, stabilization methodology of two-phase separation was discussed from the view point of chemical potential. As the result, LBM of micro-scale CO_2 in the porous media was performed stably.
