Skip to Main content Skip to Navigation
Journal articles

Phenomenology and physical origin of shear-localization and shear-banding in complex fluids

Guillaume Ovarlez 1 Stéphane Rodts 2 Xavier Chateau 1 Philippe Coussot 3
1 Rhéophysique
navier umr 8205 - Laboratoire Navier
2 Physique des milieux poreux
navier umr 8205 - Laboratoire Navier
Abstract : We review and compare the phenomenological aspects and physical origin of shear-localization and shear-banding in various material types, namely emulsions, suspensions, colloids, granular materials and micellar systems. It appears that shear-banding, which must be distinguished from the simple effect of coexisting static-flowing regions in yield stress fluids, occurs in the form of a progressive evolution of the local viscosity towards two significantly different values in two adjoining regions of the fluids in which the stress takes slightly different values. This suggests that from a global point of view shear-banding in these systems has a common physical origin: two physical phenomena (for example, in colloids, destructuration due to flow and restructuration due to aging) are in competition and, depending on the flow conditions, one of them becomes dominant and makes the system evolve in a specific direction.
Complete list of metadata

Cited literature [71 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-00454772
Contributor : Guillaume Ovarlez Connect in order to contact the contributor
Submitted on : Tuesday, February 9, 2010 - 11:55:23 AM
Last modification on : Tuesday, December 8, 2020 - 10:21:04 AM
Long-term archiving on: : Friday, June 18, 2010 - 7:40:14 PM

File

Ovarlez_et_al_shear_banding_20...
Files produced by the author(s)

Identifiers

Citation

Guillaume Ovarlez, Stéphane Rodts, Xavier Chateau, Philippe Coussot. Phenomenology and physical origin of shear-localization and shear-banding in complex fluids. Rheologica Acta, Springer Verlag, 2009, 48 (8), pp.831-844. ⟨10.1007/s00397-008-0344-6⟩. ⟨hal-00454772⟩

Share

Metrics

Record views

380

Files downloads

586