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Title:Structure and kinematics in dense free-surface granular flow
Author(s):Hill, Kimberly M.; Gioia, Gustavo; Tota, Vinay V.
Abstract:We show that the structure of a dense, free-surface boundary layer granular flow is similar to the structure of a laminar liquid flow: there is a strong component of order (stratification parallel to the mean flow) superimposed with a mild component of disorder (self-diffusion perpendicular to the mean flow). We also show that the self-diffusion coefficient scales with the mean velocity and propose a model that relates this scaling to the ordered structure of the flow. Last, we show that the structure of the flow imprints an oscillatory signature (similar to that found in confined granular flow) on the mean velocity profile.
Issue Date:2003-08
Publisher:Department of Theoretical and Applied Mechanics (UIUC)
Series/Report:TAM Reports 1033
Genre:Technical Report
Publication Status:published or submitted for publication
Peer Reviewed:is peer reviewed
Date Available in IDEALS:2007-03-08
Is Version Of:Published as: Kimberly M. Hill, Gustavo Gioia, and Vinay V. Tota. Structure and kinematics in dense free-surface granular flow. Physical Review Letters, Vol. 91, No. 6, 2003, pp. 064302/1-064302/4. DOI: 10.1103/PhysRevLett.91.064302. Copyright 2003 American Physical Society. Also available at:

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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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