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Computer Simulation of Granular Shear Flows

Campbell, Charles S. and Brennen, Christopher E. (1985) Computer Simulation of Granular Shear Flows. Journal of Fluid Mechanics, 151 . pp. 167-188. ISSN 0022-1120.

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Detailed understanding of flowing granular materials is severly hampered by the deficiencies of present experimental methods. To help increase the information base, a computer simulation has been developed to describe two-dimensional unidirectional flows of inelastic fully rough particles. This paper presents the results of a Couette shear-flow simulation. The results include distributions of velocity, density and granular temperature (a measure of the kinetic energy contained in the random particle motions). The effects of density and shear rate on the granular temperature are explored. Shear and normal forces on the solid walls are compared with experimental and theoretical results. The behaviour of the particles in the simulated flow is examined and assessments are made of the collision angle and velocity distributions. The development of a distinct, 'layered' microstructure is observed in high-density granular flows.

Item Type:Article
Additional Information:Received 20 June 1983 and in revised form 18 August 1984. Professor Rolf Sabersky provided encouragement and guidance throughout the conduct of this investigation. The authors are deeply appreciative of the support provided by the National Science Foundation (Grant CME 79-15132). Additional support was provided by The Union Carbide Corportation and Chevron Oil Field Research. Special thanks are also due to Professor Stuart Savage for helping clarify the ideas in Section 6. "Reprinted with the permission of Cambridge University Press."
Record Number:CaltechAUTHORS:CAMjfm85
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:76
Deposited By: Christopher Brennen
Deposited On:14 Sep 2004
Last Modified:02 Oct 2019 22:16

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