Two-dimensional micromodels for studying the convective dissolution of carbon dioxide in 2D water-saturated porous media
Niloy De, Naval Singh, Rémy Fulcrand, Yves Méheust, Patrice Meunier, François Nadal
Abstract
plumes through the 2D porous structure. The initial wavelength of the fingers is larger in the presence of a hexagonal lattice of pillars. This effect can be correctly predicted from the theory for the gravitational instability in a Hele-Shaw cell devoid of pillars, provided that the permeability of the hexagonal porous medium is considered in the theory instead of that of the Hele-Shaw cell. Fluctuations around the theoretical prediction observed in the data are mostly attributed to a hitherto unknown weak locking of the wavelength on the distance between closest pillars.
Topics & Concepts
DissolutionCarbon dioxidePorous mediumPorosityChemical engineeringMaterials scienceAqueous solutionConvectionAqueous mediumCarbon fibersTrappingChemistryThermodynamicsComposite materialOrganic chemistryEngineeringPhysicsEcologyBiologyComposite numberCO2 Sequestration and Geologic InteractionsEnhanced Oil Recovery TechniquesMethane Hydrates and Related Phenomena