Herale, Anushka Ananthraj;
Pearce, Philip;
Hewitt, Duncan Robin;
(2025)
Emergent clogging of continuum particle suspensions in constricted channels.
Journal of Fluid Mechanics
, 1017
, Article A24. 10.1017/jfm.2025.10468.
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Abstract
Particle suspensions in confined geometries can become clogged, which can have a catastrophic effect on function in biological and industrial systems. Here, we investigate the macroscopic dynamics of dense suspensions in constricted geometries. We develop a minimal continuum two-phase model that allows for variation in particle volume fraction. The model comprises a ‘wet solid’ phase with material properties dependent on the particle volume fraction, and a seepage Darcy flow of fluid through the particles. We find that spatially varying geometry (or material properties) can induce emergent heterogeneity in the particle fraction and trigger the abrupt transition to a high-particle-fraction ‘clogged’ state.
| Type: | Article |
|---|---|
| Title: | Emergent clogging of continuum particle suspensions in constricted channels |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1017/jfm.2025.10468 |
| Publisher version: | https://doi.org/10.1017/jfm.2025.10468 |
| Language: | English |
| Additional information: | © The Author(s), 2025. Published by Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Mathematics |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10217944 |
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