Journal
PHYSICAL REVIEW E
Volume 87, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.87.011003
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Funding
- BP
- Carbon Mitigation Initiative at Princeton University
- Taiwan NSC [NSC98-2917-I-564-138]
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We experimentally examine dissolution-generated, density-driven convection with an inclined boundary in both a Hele-Shaw cell and in a porous medium. The convection, manifested by descending, dense fingers, is generated by a diffusive mixing of two liquids at the interface. We investigate the dynamics, widths, and wavelengths of the fingers and characterize the global convective transport for a wide range of permeabilities and tilt angles of the boundaries. Our results have implications for CO2 storage in a saline aquifer when brine saturated with CO2 produces a heavier mixture, which may result in an enhanced mass transfer by convection. Our measurements reveal a further enhancement of convection with inclined boundaries, which suggests that sloping formations provide improved sites for CO2 storage. DOI: 10.1103/PhysRevE.87.011003
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