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 and the volume fraction with a dimensionless viscous number . 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.
- Received 29 July 2011
DOI:https://doi.org/10.1103/PhysRevLett.107.188301
© 2011 American Physical Society
Viewpoint
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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