University of Illinois Urbana-Champaign

Radial segregation patterns in rotating granular mixtures: Waviness selection

Hill, Kimberly M.; Gioia, Gustavo; Amaravadi, Deepak R.

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https://hdl.handle.net/2142/314

Description

Title
Radial segregation patterns in rotating granular mixtures: Waviness selection
Author(s)
  • Hill, Kimberly M.
  • Gioia, Gustavo
  • Amaravadi, Deepak R.
Issue Date
2004-12
Abstract
We model the radial segregation patterns that form in a thin rotating drum partially filled with beads of two sizes. We predict that the waviness (or amplitude-to-wavelength ratio, denoted w) of a pattern should be subjected to low-pass filtering with a cut-off waviness wc that depends strongly on the fill level of the drum. Then we perform experiments and find that w < wc for all patterns, in accord with our prediction. We also find that w = wc for (and only for) steady patterns, and conclude that the waviness of a steady pattern is selected by the low-pass filtering.
Publisher
Department of Theoretical and Applied Mechanics (UIUC)
Series/Report Name or Number
TAM Reports 1057, (2004)
ISSN
0073-5264
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/314

Owning Collections

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.