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Title:Effects of roughness on nonlinear stationary vortices in rotating disk flows
Author(s):Riahi, Daniel N.
Subject(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.
Issue Date:1996-06
Publisher:Department of Theoretical and Applied Mechanics. College of Engineering. University of Illinois at Urbana-Champaign
Series/Report:TAM R 826
1996-6013
Genre:Technical Report
Type:Text
Language:English
URI:http://hdl.handle.net/2142/112526
ISSN:0073-5264
Rights Information:Copyright 1996 Board of Trustees of the University of Illinois
Date Available in IDEALS:2021-11-04


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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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