Rapid Granular Flows as Mesoscopic Systems

M-L. Tan and I. Goldhirsch
Phys. Rev. Lett. 81, 3022 – Published 5 October 1998
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Abstract

The dissipative nature of the particle interactions is responsible for an inherent lack of scale separation in granular systems which is not related to the typical grain/container size ratios. It is demonstrated that rapid granular flows are typically supersonic, shear rates in these systems are nearly always “large,” the mean free times are comparable with the macroscopic time scale(s), and the mean free paths can be of macroscopic dimensions, the latter indicating nonlocality. Additional physical and computational implications are discussed.

  • Received 22 May 1998

DOI:https://doi.org/10.1103/PhysRevLett.81.3022

©1998 American Physical Society

Authors & Affiliations

M-L. Tan

  • Cambridge Hydrodynamics, Inc., 666 Plainsboro Road, Suite 1000, Plainsboro, New Jersey 08536

I. Goldhirsch

  • Department of Fluid Mechanics and Heat Transfer, Faculty of Engineering, Tel-Aviv University, Ramat Aviv, Tel-Aviv 69978, Israel

Comments & Replies

Tan and Goldhirsch Reply:

M-L. Tan and I. Goldhirsch
Phys. Rev. Lett. 82, 4567 (1999)

Comment on “Rapid Granular Flows as Mesoscopic Systems”

James W. Dufty and J. Javier Brey
Phys. Rev. Lett. 82, 4566 (1999)

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Vol. 81, Iss. 14 — 5 October 1998

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