Townsend, AK;
Wilson, HJ;
(2017)
Frictional shear thickening in suspensions: The effect of rigid asperities.
Physics of Fluids
, 29
(12)
, Article 121607. 10.1063/1.4989929.
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Abstract
We study non-Brownian suspensions under steady shear flow. In concentrated suspensions, we are trying to reproduce the shear thickening phenomenon seen in, for example, cornstarch. We investigate the effect of different frictional contact models. When contact acts to impose a fixed minimum separation between particles, there is a strict upper bound to the viscosity predicted by simulations. We deduce that soft or compressible contacts are a critical component of the strong shear thickening seen in experiments.
| Type: | Article |
|---|---|
| Title: | Frictional shear thickening in suspensions: The effect of rigid asperities |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1063/1.4989929 |
| Publisher version: | https://doi.org/10.1063/1.4989929 |
| Language: | English |
| Additional information: | This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | shear thickening, simulation, contact, soft contact, friction |
| 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/10024878 |
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