285 citations · 1.2k across the 8 of their papers we have counts for
8 papers
Macroscopic Discontinuous Shear Thickening vs Local Shear Jamming in Cornstarch
A. Fall, F. Bertrand, D. Hautemayou +4
We study the emergence of discontinuous shear-thickening (DST) in cornstarch, by combining macroscopic rheometry with local Magnetic Resonance Imaging (MRI) measurements. We bring…
Shear thickening of cornstarch suspensions
Abdoulaye Fall, François Bertrand, Guillaume Ovarlez +1
We study the rheology of cornstarch suspensions, a non-Brownian particle system that exhibits discontinuous shear thickening. Using magnetic resonance imaging (MRI), the local prop…
Shear-induced sedimentation in yield stress fluids
Guillaume Ovarlez, François Bertrand, Philippe Coussot +1
Stability of coarse particles against gravity is an important issue in dense suspensions (fresh concrete, foodstuff, etc.). On the one hand, it is known that they are stable at res…
Flows and heterogeneities with a vane tool: Magnetic resonance imaging measurements
Guillaume Ovarlez, Fabien Mahaut, François Bertrand +1
We study the local flow properties of various materials in a vane-in-cup geometry. We use magnetic resonance imaging techniques to measure velocities and particle concentrations in…
Shear thickening and migration in granular suspensions
Abdoulaye Fall, Anaël Lemaître, François Bertrand +2
We study the emergence of shear thickening in dense suspensions of non-Brownian particles. We combine local velocity and concentration measurements using Magnetic Resonance Imaging…
Shear induced drainage in foamy yield-stress fluids
Julie Goyon, François Bertrand, Olivier Pitois +1
Shear induced drainage of a foamy yield stress fluid is investigated using MRI techniques. Whereas the yield stress of the interstitial fluid stabilizes the system at rest, a fast…