Article Dans Une Revue Physical Review Letters Année : 2011

Unifying Suspension and Granular Rheology

Résumé

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 and the volume fraction with a dimensionless viscous number I v. 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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hal-01432411 , version 1 (11-01-2017)

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François Boyer, Elisabeth Guazzelli, Olivier Pouliquen. Unifying Suspension and Granular Rheology. Physical Review Letters, 2011, 107, ⟨10.1103/PhysRevLett.107.188301⟩. ⟨hal-01432411⟩
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