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Towards a non-empirical trailing edge noise prediction model

Towards a non-empirical trailing edge noise prediction model
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 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 2 dB is obtained in the mid to high frequency range.
0022-460X
50-68
Stalnov, Oksana
6ca7508b-4d32-4e46-9158-ef8f03795ece
Paruchuri, Chaitanya
5c1def64-6347-4be3-ac2d-b9f6a314b81d
Joseph, Phillip
9c30491e-8464-4c9a-8723-2abc62bdf75d
Stalnov, Oksana
6ca7508b-4d32-4e46-9158-ef8f03795ece
Paruchuri, Chaitanya
5c1def64-6347-4be3-ac2d-b9f6a314b81d
Joseph, Phillip
9c30491e-8464-4c9a-8723-2abc62bdf75d

Stalnov, Oksana, Paruchuri, Chaitanya and Joseph, Phillip (2016) Towards a non-empirical trailing edge noise prediction model. Journal of Sound and Vibration, 372, 50-68. (doi:10.1016/j.jsv.2015.10.011).

Record type: Article

Abstract

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 2 dB is obtained in the mid to high frequency range.

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Accepted/In Press date: 13 October 2015
e-pub ahead of print date: 7 March 2016
Published date: 23 June 2016

Identifiers

Local EPrints ID: 428329
URI: http://eprints.soton.ac.uk/id/eprint/428329
ISSN: 0022-460X
PURE UUID: 012f3591-760e-4d42-aeeb-3b78cbd4a9e4

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Date deposited: 21 Feb 2019 17:30
Last modified: 16 Dec 2019 17:43

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