A computational and experimental investigation of incompressible oscillatory airfoil flow and flutter problems.
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Authors
Riester, Peter J.
Subjects
Flutter
Theodorsen comparison with panel code U2DDF
Enhanced lift
Flow visualization
Theodorsen comparison with panel code U2DDF
Enhanced lift
Flow visualization
Advisors
Platzer, Max F.
Hebbar, S.K.
Date of Issue
1993-06
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
In this thesis several incompressible oscillatory flow and
flutter problems were investigated. First, a previously
developed unsteady panel code was modified so that systematic
comparisons with Theodorsen's classical theory could be
accomplished. It was found that the panel code is in excellent
agreement with the Theodorsen results. Second, the panel code
was applied to the analysis of bending- torsion flutter. Again,
general agreement with Theodorsen's flutter predictions was
obtained. In the experimental part of the thesis two flow
visualization experiments were performed. First, the vortical
flow patterns generated by an airfoil executing harmonic
plunge oscillations were visualized. In the second experiment, the interference effects between a stationary airfoil and a
small vane executing plunge oscillations were explored.
Type
Thesis
Description
Series/Report No
Department
Aeronautical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
149 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.