The Characteristics of CO₂ Flow and Thermal Field in a Porous Media

International attention has been considerably paid for the technology of CO₂ capture and storage (CCS) these days because of global warming. Among the technologies of CCS, the prediction of CO₂ behavior in underground is very crucial for CO₂ storage design. In the present study, a pore-scale level model is developed to mimic real porous structure and by using CFD (computational fluid dynamics) the characteristics of the CO₂ flow and thermal fields are investigated in the pore-level micro porous structure. Varying the CO₂ injection conditions such as flow rate, pressure and temperature, the behavior of CO₂ is calculated. Especially, the physical conditions such as temperature and pressure are set up equivalent to the underground condition at which CO₂ is injected. From the results, the injection condition of CO₂ is very critical to the characteristics of the flow and thermal fields in the micro-scale porous structure.