University of Illinois Urbana-Champaign

Wave and vortex generation and interaction in turbulent channel flow between wavy boundaries

Riahi, Daniel N.

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https://hdl.handle.net/2142/112624

Description

Title
Wave and vortex generation and interaction in turbulent channel flow between wavy boundaries
Author(s)
Riahi, Daniel N.
Issue Date
1999-07
Keyword(s)
  • Wave Generation
  • Vortex Generation
  • Wavy Boundaries
Abstract
A turbulent model was developed and analyzed for a high Reynolds number channel flow between wavy boundaries. Asymptotic method is employed to analyze the flow in a core region away from the boundaries and two viscous wall layer regions adjacent to the boundaries. The spanwise dependence of the wavy boundary shape functions contributes to source terms in the system for the streamwise vortices. The presence of these source terms require both streamwise and spanwise variations of the induced boundary waves. The boundary waves, due to the wavy boundaries, were found to be able to control the existence, scales, variations and shape of the induced turbulent vortices. Important cases were mfound which indicate that only combined effects of the two wavy boundaries can generate vortices.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 916
  • 1999-6018
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112624
Copyright and License Information
Copyright 1999 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.