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Title:Radial Segregation Patterns in Rotating Granular Mixtures: Waviness Selection
Author(s):Hill, Kimberly M.; Gioia, Gustavo; Amaravadi, Deepak R.
Subject(s):Granular materials
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 cutoff 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.
Issue Date:2004-11
Publisher:American Physical Society
Citation Info:Kimberly M. Hill, Gustavo Gioia, and Deepak R.Amaravadi. Radial segregation patterns in rotating granular mixtures: Waviness selection. Physical Review Letters, Vol. 93, No. 22, 2004, pp. 224301-4
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Rights Information:Copyright owned by American Physical Society 2004.
Date Available in IDEALS:2007-06-18
Has Version(s):Previously released as TAM Report 1057.

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