University of Illinois Urbana-Champaign

Structure and kinematics in dense free-surface granular flow

Hill, Kimberly M.; Gioia, Gustavo; Tota, Vinay V.

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https://hdl.handle.net/2142/300

Description

Title
Structure and kinematics in dense free-surface granular flow
Author(s)
  • Hill, Kimberly M.
  • Gioia, Gustavo
  • Tota, Vinay V.
Issue Date
2003-08
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.
Publisher
Department of Theoretical and Applied Mechanics (UIUC)
Series/Report Name or Number
TAM Reports 1033
ISSN
0073-5264
Type of Resource
text
Language
en
Permalink
http://hdl.handle.net/2142/300

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.