Particle Dynamics in Sheared Granular Matter

W. Losert, L. Bocquet, T. C. Lubensky, and J. P. Gollub
Phys. Rev. Lett. 85, 1428 – Published 14 August 2000
PDFExport Citation

Abstract

The particle dynamics and shear forces of granular matter in a Couette geometry are determined experimentally. The normalized tangential velocity V(y) declines strongly with distance y from the moving wall, independent of the shear rate and of the shear dynamics. Local rms velocity fluctuations δV(y) scale with the local velocity gradient to the power 0.4±0.05. These results agree with a locally Newtonian, continuum model, where the granular medium is assumed to behave as a liquid with a local temperature [δV(y)]2 and density dependent viscosity.

  • Received 21 April 2000

DOI:https://doi.org/10.1103/PhysRevLett.85.1428

©2000 American Physical Society

Authors & Affiliations

W. Losert1, L. Bocquet2,3, T. C. Lubensky2, and J. P. Gollub1,2

  • 1Physics Department, Haverford College, Haverford, Pennsylvania 19041
  • 2Physics Department, University of Pennsylvania, Philadelphia, Pennsylvania 19104
  • 3Laboratoire de Physique de l'E.N.S. de Lyon, U.M.R. C.N.R.S. 5672, 46 Allée d'Italie, 69364 Lyon Cedex, France

References (Subscription Required)

Click to Expand
Issue

Vol. 85, Iss. 7 — 14 August 2000

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
×