Hostname: page-component-745bb68f8f-b95js Total loading time: 0 Render date: 2025-01-27T17:07:54.311Z Has data issue: false hasContentIssue false
  • English
  • Français

Crucial role of sidewalls in granular surface flows: consequences for the rheology

Published online by Cambridge University Press:  11 October 2005

PIERRE JOP ,
YOËL FORTERRE  and
OLIVIER POULIQUEN
PIERRE JOP
Affiliation:
IUSTI, Université de Provence, CNRS UMR 6595, 5 rue Enrico Fermi, 13453 Marseille cedex 13, France
YOËL FORTERRE
Affiliation:
IUSTI, Université de Provence, CNRS UMR 6595, 5 rue Enrico Fermi, 13453 Marseille cedex 13, France
OLIVIER POULIQUEN
Affiliation:
IUSTI, Université de Provence, CNRS UMR 6595, 5 rue Enrico Fermi, 13453 Marseille cedex 13, France
Get access Rights & Permissions [Opens in a new window]

Abstract

In this paper we study the steady uniform flows that develop when granular material is released from a hopper on top of a static pile in a channel. More specifically, we focus on the role of sidewalls by carrying out experiments in set-up of different widths, from narrow channels 20 particle diameters wide to channels 600 particle diameters wide. Results show that steady flows on pile are entirely controlled by sidewall effects. A theoretical model, taking into account the wall friction and based on a simple local constitutive law recently proposed for other granular flow configurations, gives predictions in quantitative agreement with the measurements. This result gives new insights into our understanding of free-surface granular flows and strongly supports the relevance of the constitutive law proposed.

Type
Papers
Information
Journal of Fluid Mechanics , Volume 541 , 25 October 2005 , pp. 167 - 192
Copyright
© 2005 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)