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Type: Conference paper
Title: A RANS-based statistical noise model for trailing edge noise
Author: Albarracin, C.
Doolan, C.
Jones, R.
Hansen, C.
Brooks, L.
Teubner, M.
Citation: 18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference), 2012, pp.1-15
Publisher: American Institute of Aeronautics and Astronautics
Issue Date: 2012
ISBN: 9781600869327
Conference Name: 18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference) (4 Jun 2012 - 6 Jun 2012 : Colorado Springs, CO)
Statement of
C.A. Albarracin, C.J. Doolan, R.F. Jones, C.H. Hansen, L.A. Brooks
Abstract: A RANS (Reynolds averaged Navier-Stokes)-based statistical noise model (RSNM) is used to calculate the trailing edge noise produced by NACA 0012 and DU 96-180 airfoils, at various angles of attack and ow velocities. The method uses a Green's function for a semi-in nite half-plane to generate a far- eld acoustic autospectrum using a statistical model for the turbulence in the boundary layer in the vicinity of the trailing edge. This statistical model is an assumed turbulent velocity cross spectrum, and is de ned in terms of the mean ow data provided by a RANS simulation. Reasonably good agreement is observed between acoustic predictions and experiments for the NACA 0012 cases. For the DU 96-180, the model over-predicts the experimental acoustic spectra.
Description: AIAA 2012-2181
Rights: © 2012 by the American Institute of Aeronautics and Astronautics, Inc.
DOI: 10.2514/6.2012-2181
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Appears in Collections:Aurora harvest 7
Mechanical Engineering conference papers

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