Wetting Heterogeneities in Porous Media Control Flow Dissipation

Murison, Julie, Semin, Benoit, Baret, Jean-Christophe, Herminghaus, Stephan, Schroeter, Matthias and Brinkmann, Martin (2014) Wetting Heterogeneities in Porous Media Control Flow Dissipation. Physical Review Applied, 2 (3). 034002. ISSN 2331-7019

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Official URL: https://doi.org/10.1103/PhysRevApplied.2.034002


Pressure-controlled displacement of an oil-water interface is studied in dense packings of functionalized glass beads with well-defined spatial wettability correlations. An enhanced dissipation is observed if the typical extension ξ of the same-type wetting domains is smaller than the average bead diameter d. Three-dimensional imaging using x-ray microtomography shows that the frequencies n(s) of residual droplet volumes s for different ξ collapse onto the same curve. This indicates that the additional dissipation for small ξ is due to contact line pinning rather than an increase of capillary break-up and coalescence events.

Item Type: Article
Subjects: F300 Physics
Depositing User: Elena Carlaw
Date Deposited: 18 Nov 2019 10:31
Last Modified: 31 Jul 2021 22:07
URI: http://nrl.northumbria.ac.uk/id/eprint/41465

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