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Dense granular flow around a penetrating object: Experiments and hydrodynamic model

Authors
  • Seguin, Antoine
  • Bertho, Yann
  • Gondret, Philippe
  • Crassous, Jerome
Type
Published Article
Publication Date
Jun 24, 2011
Submission Date
Jun 24, 2011
Identifiers
DOI: 10.1103/PhysRevLett.107.048001
Source
arXiv
License
Yellow
External links

Abstract

We present in this Letter experimental results on the bidimensional flow field around a cylinder penetrating into dense granular matter together with drag force measurements. A hydrodynamic model based on extended kinetic theory for dense granular flow reproduces well the flow localization close to the cylinder and the corresponding scalings of the drag force, which is found to not depend on velocity, but linearly on the pressure and on the cylinder diameter and weakly on the grain size. Such a regime is found to be valid at a low enough "granular" Reynolds number.

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