dc.creator | Hermes, Michiel | |
dc.creator | Guy, Ben M | |
dc.creator | Poy, Guilhem | |
dc.creator | Cates, Michael Elmhirst | |
dc.creator | Wyart, Matthieu | |
dc.creator | Poon, Wilson CK | |
dc.date.accessioned | 2016-05-13 | |
dc.date.accessioned | 2018-11-24T23:18:57Z | |
dc.date.available | 2016-06-13T14:22:15Z | |
dc.date.available | 2018-11-24T23:18:57Z | |
dc.date.issued | 2016 | |
dc.identifier | https://www.repository.cam.ac.uk/handle/1810/256285 | |
dc.identifier.uri | http://repository.aust.edu.ng/xmlui/handle/123456789/3374 | |
dc.description.abstract | We present experimental results on dense corn-starch suspensions as examples of non-Brownian, nearly-hard particles that undergo continuous and discontinuous shear thickening (CST and DST) at intermediate and high densities respectively. Our results offer strong support for recent theories involving a stress-dependent effective contact friction among particles. We show however that in the DST regime, where theory might lead one to expect steady-state shear bands oriented layerwise along the vorticity axis, the real flow is unsteady. To explain this, we argue that steady-state banding is generically ruled out by the requirement that, for hard non-Brownian particles, the solvent pressure and the normal-normal component of the particle stress must balance separately across the interface between bands. (Otherwise there is an unbalanced migration flux.) However, long-lived transient shear bands remain possible. | |
dc.language | en | |
dc.publisher | AIP | |
dc.publisher | Journal of Rheology | |
dc.rights | http://creativecommons.org/licenses/by-nc/4.0/ | |
dc.rights | http://creativecommons.org/licenses/by-nc/4.0/ | |
dc.rights | http://creativecommons.org/licenses/by-nc/4.0/ | |
dc.rights | Attribution-NonCommercial 4.0 International | |
dc.rights | Attribution-NonCommercial 4.0 International | |
dc.rights | Attribution-NonCommercial 4.0 International | |
dc.title | Unsteady flow and particle migration in dense, non-Brownian suspensions | |
dc.type | Article | |