Projects per year
Abstract
Shear thickening is a widespread phenomenon in suspension flow that, despite sustained study, is still the subject of much debate. The longstanding view that shear thickening is due to hydrodynamic clusters has been challenged by recent theory and simulations suggesting that contact forces dominate, not only in discontinuous, but also in continuous shear thickening. Here, we settle this dispute using shear reversal experiments on micron-sized silica and latex particles to measure directly the hydrodynamic and contact force contributions to shear thickening. We find that contact forces dominate even continuous shear thickening. Computer simulations show that these forces most likely arise from frictional interactions.
Original language | English |
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Article number | 228304 |
Number of pages | 5 |
Journal | Physical Review Letters |
Volume | 115 |
Issue number | 22 |
DOIs | |
Publication status | Published - 25 Nov 2015 |
Keywords / Materials (for Non-textual outputs)
- NON-BROWNIAN SUSPENSIONS
- CONCENTRATED SUSPENSIONS
- RHEOLOGY
- DISPERSIONS
- MICROSTRUCTURE
- DYNAMICS
- SPHERES
- FLOW
- SIMULATION
- PARTICLES
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Dive into the research topics of 'Hydrodynamic and Contact Contributions to Continuous Shear Thickening in Colloidal Suspensions'. Together they form a unique fingerprint.Projects
- 1 Finished
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Two-phase flow modelling of dense suspensions
Sun, J. (Principal Investigator)
UK industry, commerce and public corporations
1/09/12 → 30/09/16
Project: Research
Datasets
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Hydrodynamic and Contact Contributions to Continuous Shear Thickening in Colloidal Suspensions
Guy, B. M. (Creator), Lin, N. Y. C. (Creator), Hermes, M. (Creator), Sun, J. (Creator), Poon, W. (Creator) & Cohen, I. (Creator), Edinburgh DataShare, 10 Nov 2015
DOI: 10.7488/ds/324, http://arxiv.org/pdf/1509.02750.pdf
Dataset