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A pore-scale study of transport of inertial particles by water in porous media
University of Bergen, Norway.
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).ORCID iD: 0000-0002-1160-0007
University of Bergen, Norway.
Karlstad University, Faculty of Health, Science and Technology (starting 2013), Department of Mathematics and Computer Science (from 2013).
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2019 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 207, p. 397-409Article in journal (Refereed) Published
Abstract [en]

We study the transport of inertial particles in water flow in porous media. Our interest lies in understanding the accumulation of particles including the possibility of clogging. We propose that accumulation can be a result of hydrodynamic effects: the tortuous paths of the porous medium generate regions of dominating strain, which favour the accumulation of particles. Numerical simulations show that essentially two accumulation regimes are identified: for low and for high flow velocities. When particles accumulate at the entrance of a pore throat (high-velocity region), a clog is formed. This significantly modifies the flow, as the partial blockage of the pore causes a local redistribution of pressure, which diverts the upstream water flow into neighbouring pores. Moreover, we show that accumulation in high velocity regions occurs in heterogeneous media, but not in homogeneous media, where we refer to homogeneity with respect to the distribution of the pore throat diameters.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 207, p. 397-409
Keywords [en]
Porous medium, particles transport, clogging, flow diversion, inertial particles
National Category
Mathematics
Research subject
Mathematics
Identifiers
URN: urn:nbn:se:kau:diva-72906DOI: 10.1016/j.ces.2019.06.036ISI: 000481644300031OAI: oai:DiVA.org:kau-72906DiVA, id: diva2:1328899
Available from: 2019-06-24 Created: 2019-06-24 Last updated: 2019-09-16Bibliographically approved

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Citation style
  • apa
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