Biblio seminar: Unifying Suspension and Granular Rheology
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.
Link to the paper:
- https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.107.188301
- https://hal.science/hal-01432411v1/document