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Stress propagation in a colloidal suspension under shear

Published

Author(s)

William L. George, Pascal Hebraud, Didier Lootens, Mouhamad Khalil, Nicos Martys

Abstract

The stress propagation in a concentrated attractive colloidal suspension, under shear, is studied using mumerical simulations. A novel way of describing the intercolloidal stress field is proposed and its spatial correlations are studied. An inertia-like tensor is defined in order to characterize the anisotropic nature of the stress field. It is shown that, although the particles remain in a liquid order, the interparticle stress is strongly anisotropic. A transition under flow is observed: at low deformations, the stress propagates along the compression direction of the shear, whereas at high deformations, the stress is organized into layers parallel to the flow direction.
Citation
European Physical Journal E

Keywords

Rheology, Yield Stress, Colloids, Granular Fluids

Citation

George, W. , Hebraud, P. , Lootens, D. , Khalil, M. and Martys, N. (2012), Stress propagation in a colloidal suspension under shear, European Physical Journal E (Accessed August 8, 2022)
Created February 29, 2012, Updated October 12, 2021