Noise model for serrated trailing edges compared to wind tunnel measurements

Andreas Fischer; Franck Bertagnolio; Wen Zhong Shen; Jesper Madsen

doi:10.1088/1742-6596/753/2/022053

Noise model for serrated trailing edges compared to wind tunnel measurements

Andreas Fischer, Franck Bertagnolio, Wen Zhong Shen, Jesper Madsen

LM Wind Power

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Abstract

A new CFD RANS based method to predict the far field sound pressure emitted from an aerofoil with serrated trailing edge has been developed. The model was validated by comparison to measurements conducted in the Virginia Tech Stability Wind Tunnel. The model predicted 3 dB lower sound pressure levels, but the tendencies for the different configurations were predicted correctly. Therefore the model can be used to optimise the serration geometry. A disadvantage of the new model is that the computational costs are significantly higher than for the Amiet model for a straight trailing edge. However, it is by decades faster than LES methods.

Original language	English
Article number	022053
Book series	Journal of Physics: Conference Series (Online)
Volume	753
Number of pages	9
ISSN	1742-6596
DOIs	https://doi.org/10.1088/1742-6596/753/2/022053
Publication status	Published - 2016
Event	The Science of Making Torque from Wind 2016 - Technische Universität München (TUM), Munich, Germany Duration: 5 Oct 2016 → 7 Oct 2016 Conference number: 6 https://www.events.tum.de/?sub=29

Conference

Conference	The Science of Making Torque from Wind 2016
Number	6
Location	Technische Universität München (TUM)
Country/Territory	Germany
City	Munich
Period	05/10/2016 → 07/10/2016
Internet address	https://www.events.tum.de/?sub=29

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title = "Noise model for serrated trailing edges compared to wind tunnel measurements",

abstract = "A new CFD RANS based method to predict the far field sound pressure emitted from an aerofoil with serrated trailing edge has been developed. The model was validated by comparison to measurements conducted in the Virginia Tech Stability Wind Tunnel. The model predicted 3 dB lower sound pressure levels, but the tendencies for the different configurations were predicted correctly. Therefore the model can be used to optimise the serration geometry. A disadvantage of the new model is that the computational costs are significantly higher than for the Amiet model for a straight trailing edge. However, it is by decades faster than LES methods.",

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AU - Bertagnolio, Franck

AU - Shen, Wen Zhong

AU - Madsen, Jesper

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PY - 2016

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N2 - A new CFD RANS based method to predict the far field sound pressure emitted from an aerofoil with serrated trailing edge has been developed. The model was validated by comparison to measurements conducted in the Virginia Tech Stability Wind Tunnel. The model predicted 3 dB lower sound pressure levels, but the tendencies for the different configurations were predicted correctly. Therefore the model can be used to optimise the serration geometry. A disadvantage of the new model is that the computational costs are significantly higher than for the Amiet model for a straight trailing edge. However, it is by decades faster than LES methods.

AB - A new CFD RANS based method to predict the far field sound pressure emitted from an aerofoil with serrated trailing edge has been developed. The model was validated by comparison to measurements conducted in the Virginia Tech Stability Wind Tunnel. The model predicted 3 dB lower sound pressure levels, but the tendencies for the different configurations were predicted correctly. Therefore the model can be used to optimise the serration geometry. A disadvantage of the new model is that the computational costs are significantly higher than for the Amiet model for a straight trailing edge. However, it is by decades faster than LES methods.

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DO - 10.1088/1742-6596/753/2/022053

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JF - Journal of Physics: Conference Series

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ER -

Noise model for serrated trailing edges compared to wind tunnel measurements

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