Numerical simulation of dilution process in CO2 ocean sequestration

In order to investigate biological impacts caused by ocean sequestration of carbon dioxide, we have been elucidating dilution processes of CO2 in the vicinity of injection points in the deep ocean from a fluid-dynamical point of view. A CFD (Computational Fluid Dynamics) method for two-phase flow with mass and heat transfer has been developed for analysing CO2 droplet plume at the middle depth. Its results suggest particular dynamics of plume of rising and dissolving droplets and predict that such impacts can be insignificant in terms of individual mortality depending on the rate and period of injection.