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Title:Is segregation-by-particle -type generic mechanism underlying finger formation at fronts of flowing granular media
Author(s):Shen, Amy Q.; Fried, Eliot; Thoroddsen, Sigurdur T.
Subject(s):Finger Formation
Flowing Granular Media
Segregation By Particle Type
Abstract:The fronts of flowing granular media often manifest fingered patterns. For the case of a granular flow down an inclined plane, Pouliquen, Delour & Savage have proposed that such patterns are induced by the segregation of coarse irregularly shaped particles. Here, we consider a thin layer of a granular medium flowing within a cylinder that is rotated about its horizontal axis of symmetry. Our results show that even when the medium is well-sieved and consists of nearly spherical grains its leading edge may develop fingers. This suggests that , in general flow configurations, mechanisms other than segregation by particle type may be active in the instability of a straight front.
Issue Date:1998-10
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 893
Genre:Technical Report
Rights Information:Copyright 1998 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04

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  • Technical Reports - Theoretical and Applied Mechanics (TAM)
    TAM technical reports include manuscripts intended for publication, theses judged to have general interest, notes prepared for short courses, symposia compiled from outstanding undergraduate projects, and reports prepared for research-sponsoring agencies.

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