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Unifying Suspension and Granular Rheology

François Boyer, Élisabeth Guazzelli, and Olivier Pouliquen
Phys. Rev. Lett. 107, 188301 – Published 24 October 2011
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Abstract

Using an original pressure-imposed shear cell, we study the rheology of dense suspensions. We show that they exhibit a viscoplastic behavior similarly to granular media successfully described by a frictional rheology and fully characterized by the evolution of the friction coefficient μ and the volume fraction ϕ with a dimensionless viscous number Iv. Dense suspension and granular media are thus unified under a common framework. These results are shown to be compatible with classical empirical models of suspension rheology and provide a clear determination of constitutive laws close to the jamming transition.

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  • Received 29 July 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.188301

© 2011 American Physical Society

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Unifying Liquid and Granular Flow

Published 24 October 2011

A conceptual framework that describes the fluidlike flow of dry granular materials also works for particles suspended in a liquid.

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Authors & Affiliations

François Boyer*, Élisabeth Guazzelli, and Olivier Pouliquen

  • IUSTI, Aix-Marseille Université, CNRS (UMR 6595) 5 rue E. Fermi, 13453 Marseille cedex 13, France

  • *francois.boyer@polytech.univ-mrs.fr

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Issue

Vol. 107, Iss. 18 — 28 October 2011

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