Density Driven (including Geothermal Effect) Natural Convection of Carbon Dioxide in Brine Saturated Porous Media in the Context of Geological Sequestration
نویسندگان
چکیده
Double diffusive natural convection of carbon dioxide in two-dimensional cavities filled with brine saturated porous media is numerically investigated in this study. Vertical gradients of carbon dioxide concentration and temperature are imposed across the height of the cavity. The objective is to understand the dissolution of carbon dioxide through natural convection process over long period of time after sequestration into subsurface porous media aquifer. The problem parameters are the solutal Rayleigh number (100 Ras 10000), the buoyancy ratio (2 N 100), the thermal Rayleigh number (2 RaT 100), the cavity aspect ratio (0.5 A 2), and a fixed Lewis number (Le = 301). It is found that the CO2 plumes move faster when Ras is increased, however slow down with decreasing N. For every simulation run, the average CO2 dissolution ( , j i n n
منابع مشابه
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