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Hydrodynamic and Contact Contributions to Continuous Shear Thickening in Colloidal Suspensions

Dataset

Related Edinburgh Organisations

PublisherEdinburgh DataShare
Date made available10 Nov 2015

Description

This item contains six zipped folders. Each folder contains spreadsheet(s) and readme file(s).

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.

Data Citation

Lin, Neil; Guy, Ben Michael; Hermes, Michiel; Ness, Christopher; Sun, Jin; Poon, Wilson C. K.; Cohen, Itai. (2015). Hydrodynamic and Contact Contributions to Continuous Shear Thickening in Colloidal Suspensions, [dataset]. University of Edinburgh, School of Physics, Institute for Condensed Matter and Complex Systems. http://dx.doi.org/10.7488/ds/324.

ID: 24779103