University of Illinois Urbana-Champaign

Is segregation-by-particle -type generic mechanism underlying finger formation at fronts of flowing granular media

Shen, Amy Q.; Fried, Eliot; Thoroddsen, Sigurdur T.

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https://hdl.handle.net/2142/112600

Description

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.
Issue Date
1998-10
Keyword(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.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 893
  • 1998-6019
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112600
Copyright and License Information
Copyright 1998 Board of Trustees of the University of Illinois

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Technical Reports - Theoretical and Applied Mechanics (TAM) PRIMARY
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.