Numerical modeling of CO2 diffusion into water-oil liquid system using moving mesh technique

A new diffusion model is developed to study the mass diffusion of CO2 in the water-oil liquid system. The diffusion stages are divided by the position of diffused CO2 front in the liquid system. The 1st and 2nd diffusion stages are performed to characterize the CO2 diffusion in individual oil phase and in water-oil liquid system, respectively. The Peng-Robinson equation of state combined with the diffusion model of two stages are developed to...