University of Illinois Urbana-Champaign

Effects of roughness on nonlinear stationary vortices in rotating disk flows

Riahi, Daniel N.

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https://hdl.handle.net/2142/112526

Description

Title
Effects of roughness on nonlinear stationary vortices in rotating disk flows
Author(s)
Riahi, Daniel N.
Issue Date
1996-06
Keyword(s)
  • Roughness
  • Nonlinear Stationary Vortices
  • Rotating Disk Flows
Abstract
Primary stability of rotating disk boundary layer flow over a rough surface for stationary modes was investigated by using the weakly nonlinear theory where the Reynolds number R is close to its critical value Rc as determined by linear theory . Both the single mode case, where the wave vector K equals its critical Kc at the onset of stationary primary stability, and the bi-modal case, where the wave vectors Kn(n=1,2) are close to Kc for the primary stability of the flow, are considered. The analysis leads to stable solutions for particular roughness forms and magnitude, and particlul ar wave vectors Kn(n=1,2) of the surface roughness.
Publisher
Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report Name or Number
  • TAM R 826
  • 1996-6013
ISSN
0073-5264
Type of Resource
text
Language
eng
Permalink
http://hdl.handle.net/2142/112526
Copyright and License Information
Copyright 1996 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.