Towards a non-empirical trailing edge noise prediction model

This paper extends previously published TNO-Blake model to predict airfoil broadband self-noise due to the interaction of a turbulent boundary layer with a sharp trailing edge. The main objectives of this paper are reduced the dependence on ‘turning parameters’. The method presented herein combines...

Full description

Saved in:
Bibliographic Details
Published in:Journal of sound and vibration 2016-06, Vol.372, p.50-68
Main Authors: Stalnov, Oksana, Chaitanya, Paruchuri, Joseph, Phillip F.
Format: Article
Language:English
Subjects:
airfoil self-noise
Airfoils
Broadband
Construction
Far fields
Mathematical models
surface pressure spectra
trailing edge noise
Trailing edges
Turbulent boundary layer
Vibration
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper extends previously published TNO-Blake model to predict airfoil broadband self-noise due to the interaction of a turbulent boundary layer with a sharp trailing edge. The main objectives of this paper are reduced the dependence on ‘turning parameters’. The method presented herein combines an extension to Blake׳s model to predict the pressure fluctuation on the airfoil surface due to the turbulent boundary layer. Flat plate theory, with finite-chord effects included, is introduced to predict its subsequent radiation to the far field. The paper builds on recent advances in the prediction of the streamwise turbulent intensity profile to avoid the use of empirical relationships. Surface pressure spectra measurements are compared to predictions where agreement within 2dB is obtained in the mid to high frequency range.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2015.10.011