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Intercluster interactions in rapid granular shear flows

Phys. Fluids 9, 856 (1997); doi:10.1063/1.869183

Issue Date: April 1997

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M-L. Tan
Fluid Dynamics Research Center, James Forrestal Campus, Princeton University, Princeton, New Jersey 08544

I. Goldhirsch
Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Ramat Aviv, Tel-Aviv 69978, Israel
One of the possible phases of a sheared system of inelastically colliding rigid smooth disks is one in which relatively dense strips aligned at 45° to the streamwise direction are interspersed among similarly aligned dilute strips. The dense strips may have secondary microstructures in the form of elongated clusters. The latter are formed by an instability, following which they are convected, stretched, and rotated by the shear field. This process causes cluster–cluster collisions, a result of which is the partial destruction of the colliding clusters, followed by the emergence of new clusters. In addition, it is demonstrated that clustering dynamics can be responsible for hysteresis and multistability in granular systems. The studies presented in this paper involve molecular dynamics simulations complemented by theoretical analysis. ©1997 American Institute of Physics.
History: Received 21 August 1995; accepted 31 October 1996
Permalink: http://link.aip.org/link/?PHFLE6/9/856/1
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KEYWORDS and PACS

Keywords
PACS
  • 47.55.Kf
    Fluid dynamics Nonhomogeneous flows Multiphase and particle-laden flows
  • 47.27.Pa
    Fluid dynamics Turbulent flows, convection, and heat transfer Thick shear flows
  • YEAR: 1996-97

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ISSN:
1070-6631 (print)   1089-7666 (online)
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