Nonequilibrium capillary pressure of a miscible meniscus

Vorobev, Anatoliy, Prokopev, Sergei and Lyubimova, Tatiana (2021) Nonequilibrium capillary pressure of a miscible meniscus. Langmuir, 37 (16), 4817–4826. (doi:10.1021/acs.langmuir.0c03633).

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Abstract

We examine the dynamics of a miscible displacement in a capillary, calculating the nonequilibrium capillary pressure of a moving (and slowly diffusing) miscible meniscus. During the displacement, the capillary pressure varies with time following stretching and smearing of a miscible interface. The capillary pressure remains different from zero for a long time (on a diffusion time scale), slowing the displacement. This capillary pressure is however completely ignored by all theories currently available for practical modeling of miscible displacements in capillaries and porous matrices.

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Accepted/In Press date: 5 April 2021

Published date: 27 April 2021

Additional Information: Funding Information: This research work is partially financially supported by the Russian Foundation for Basic Research (18-01-00782) and by the Tomsk Polytechnic University CE Program. The authors acknowledge the use of the IRIDIS High Performance Computing Facility, and associated support services at the University of Southampton, in the completion of this work. Publisher Copyright: © 2021 American Chemical Society.

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