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Permanent link (DOI): https://doi.org/10.7939/R3RC9W

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The Experimental Investigation of Vortex Wakes from Oscillating Airfoils Open Access

Descriptions

Other title
Subject/Keyword
NACA 0012 airfoil
tandem airfoils
unsteady flow
PIV
wake characterization
vortex detection
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Bussiere, Mathew
Supervisor and department
Nobes, David (Mechanical Engineering)
Koch, Bob (Mechanical Engineering)
Examining committee member and department
Koch, Bob (Mechanical Engineering)
Loewen, Mark (Civil & Environmental Engineering)
Flynn, Morris (Mechanical Engineering)
Nobes, David (Mechanical Engineering)
Department
Department of Mechanical Engineering
Specialization

Date accepted
2012-08-21T10:06:17Z
Graduation date
2012-11
Degree
Master of Science
Degree level
Master's
Abstract
The ability to control large vortices in the wake of an unsteady body is studied experimentally. A single airfoil in a uniform flow is forced to oscillate sinusoidally about its aerodynamic center and the resulting wake is expected to be dominated by large coherent vortices The wakes for several different oscillation waveforms are studied and a model describing the evolution of the vortices as they progress downstream is developed and compared to the experimental data. The investigation then expands to 2 airfoils in a tandem configuration where an upstream airfoil produces a predictable and well studied wake which a downstream airfoil attempts to modify in some prescribed manner. The resulting velocity field is measured experimentally with PIV and custom vortex detection software is developed.
Language
English
DOI
doi:10.7939/R3RC9W
Rights
Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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