Airfoil trailing edge noise source location at low to moderate Reynolds number
Date
2011
Authors
Arcondoulis, E.
Doolan, C.
Brooks, L.
Zander, A.
Editors
Advisors
Journal Title
Journal ISSN
Volume Title
Type:
Conference paper
Citation
17th AIAA/CEAS Aeroacoustics Conference (32nd AIAA Aeroacoustics Conference), 2011: pp.1-18
Statement of Responsibility
E.J.G. Arcondoulis, C.J. Doolan, L.A. Brooks and A.C. Zander
Conference Name
American Institute of Aeronautics and Astronautics Conference (32nd : 2011 : Portland, Oregon)
Abstract
A study of the effects of Reynolds number and angle of attack on the dominant acoustic source location relative to the trailing edge for airfoils at low-to-moderate Reynolds number is presented. This study, which was performed using acoustic beamforming in an anechoic wind tunnel, helps assess the influence of each test parameter on the distance of the acoustic source from the trailing edge thus improving our knowledge of how airfoils produce tonal noise. The results show that the acoustic source location of a NACA0012 airfoil varies along the chord for the frequency range 500 Hz to 3000 Hz at low-to-moderate Reynolds number. Changing the angle of attack and Reynolds number resulted in small changes to the acoustic source location within this frequency range. A modified flat plate, which only radiated broadband noise under similar flow conditions, presented a scattered distribution of source location between the range 300 Hz to 1200 Hz.
School/Discipline
Dissertation Note
Provenance
Description
AIAA 2011-2785
Access Status
Rights
Copyright © 2011 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.