• Editors' Suggestion

Transient Shear Banding in a Simple Yield Stress Fluid

Thibaut Divoux, David Tamarii, Catherine Barentin, and Sébastien Manneville
Phys. Rev. Lett. 104, 208301 – Published 18 May 2010

Abstract

We report a large set of experimental data which demonstrates that a simple yield stress fluid, i.e., which does not present aging or thixotropy, exhibits transient shear banding before reaching a steady state characterized by a homogeneous, linear velocity profile. The duration of the transient regime decreases as a power law with the applied shear rate γ˙. This power-law behavior, observed here in carbopol dispersions, does not depend on the gap width and on the boundary conditions for a given sample preparation. For γ˙0.1s1, heterogeneous flows could be observed for as long as 105s. These local dynamics account for the ultraslow stress relaxation observed at low shear rates.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 17 February 2010

DOI:https://doi.org/10.1103/PhysRevLett.104.208301

©2010 American Physical Society

Authors & Affiliations

Thibaut Divoux1, David Tamarii1, Catherine Barentin2, and Sébastien Manneville1

  • 1Université de Lyon, Laboratoire de Physique, Ecole Normale Supérieure de Lyon, CNRS UMR 5672, 46 Allée d’Italie, 69364 Lyon cedex 07, France
  • 2Laboratoire de Physique de la Matière Condensée et Nanostructures, Université de Lyon, CNRS UMR 5586, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne cedex, France

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 104, Iss. 20 — 21 May 2010

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×