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Dynamic Behavior of an Intruder in a Granular Couette Flow

Published online by Cambridge University Press:  11 February 2011

Jian Liu  and
Anthony D. Rosato
Jian Liu
Affiliation:
Granular Science Laboratory, Mechanical Engineering Department, New Jersey Institute of Technology, Newark, NJ 07102
Anthony D. Rosato
Affiliation:
Granular Science Laboratory, Mechanical Engineering Department, New Jersey Institute of Technology, Newark, NJ 07102
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Abstract

This paper reports on three-dimensional, steady discrete element simulations of a single large spherical intruder in a gravity-free granular Couette flow of uniform particles with diameter d. The non-equilibrium nature of the flow is characterized by the depth profile of granular temperature, which decreases inwards toward the center. An intruder of size φ = D/d migrates away from the walls at a rate that increases with φ and wall velocity U. Computations indicated that the intruder's motion is induced by the high pressure near the wall.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 759: Symposium MM – Granular Material-Based Technologies , 2002 , MM3.4
Copyright
Copyright © Materials Research Society 2003

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References

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