| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Toschi, Federico
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Topics
Publications (10/10 displayed)
- 2022Build up of yield stress fluids via chaotic emulsificationcitations
- 2022Build up of yield stress fluids via chaotic emulsificationcitations
- 2021Impact of the pre-quench state of binary fluid mixtures on surface-directed spinodal decompositioncitations
- 2021Stress Overshoots in Simple Yield Stress Fluidscitations
- 2020A multi-component lattice Boltzmann approach to study the causality of plastic events: LBM for causality of plastic events
- 2020A multi-component lattice Boltzmann approach to study the causality of plastic eventscitations
- 2019Unified theoretical and experimental view on transient shear bandingcitations
- 2014Spinodal decomposition in homogeneous and isotropic turbulencecitations
- 2014Direct evidence of plastic events and dynamic heterogeneities in soft-glasses
- 2013Turbulence induced coarsening arrest in spinodal decomposition
Places of action
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article
Unified theoretical and experimental view on transient shear banding
Abstract
International audience ; Dense emulsions, colloidal gels, microgels, and foams all display a solidlike behavior at rest characterized by a yield stress, above which the material flows like a liquid. Such a fluidization transition often consists of long-lasting transient flows that involve shear-banded velocity profiles. The characteristic time for full fluidization τf has been reported to decay as a power law of the shear rate ˙γ and of the shear stress σ with respective exponents α and β. Strikingly, the ratio of these exponents was empirically observed to coincide with the exponent of the Herschel-Bulkley law that describes the steady-state flow behavior of these complex fluids. Here we introduce a continuum model, based on the minimization of a “free energy,” that captures quantitatively all the salient features associated with such transient shear banding. More generally, our results provide a unified theoretical framework for describing the yielding transition and the steady-state flow properties of yield stress fluids.