Trailing edge noise measurement: assumptions and uncertainties

Máté Szőke; Mahdi Azarpeyvand

Trailing edge noise measurement: assumptions and uncertainties

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Abstract

This study aims to investigate the assumptions used in analytical models for the prediction of trailing edge noise and uncertainties involved in the measurement of near-field flow parameters, such as surface pressure spectra, convection velocity and spanwise length scale. The comparison and accuracy analysis of several aerofoil trailing edge noise models is performed. The study investigates the models developed by Amiet, Parchen (TNO) and Brooks-Pope-Marcolini (BPM). To provide the input variables for the different models, a flat plate has been manufactured on which the surface pressure fluctuations are measured using an array of flush mounted microphones and the boundary layer properties are found using hot-wire probes. It was found that the input properties of the investigated trailing edge noise prediction models showed strong dependency on the trailing edge condition and that the far-field noise predictions can be significantly affected by these changes.

Original language	English
Number of pages	10
Publication status	Published - 14 Jul 2016
Event	23rd International Congress on Sound and Vibration - Athens, Greece Duration: 10 Jul 2016 → …

Conference

Conference	23rd International Congress on Sound and Vibration
Country	Greece
City	Athens
Period	10/07/16 → …

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This is the accepted author manuscript (AAM). The final published version (version of record) is available online via the International Institute of Acoustics and Vibration at http://www.iiav.org/archives_icsv_last/2016_icsv23/index661a.html?va=viewpage&vaid=405&said=4&session_id=150. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 4.47 MB

http://www.iiav.org/archives_icsv_last/2016_icsv23/index661a.html?va=viewpage&vaid=405&said=4&session_id=150

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title = "Trailing edge noise measurement: assumptions and uncertainties",

abstract = "This study aims to investigate the assumptions used in analytical models for the prediction of trailing edge noise and uncertainties involved in the measurement of near-field flow parameters, such as surface pressure spectra, convection velocity and spanwise length scale. The comparison and accuracy analysis of several aerofoil trailing edge noise models is performed. The study investigates the models developed by Amiet, Parchen (TNO) and Brooks-Pope-Marcolini (BPM). To provide the input variables for the different models, a flat plate has been manufactured on which the surface pressure fluctuations are measured using an array of flush mounted microphones and the boundary layer properties are found using hot-wire probes. It was found that the input properties of the investigated trailing edge noise prediction models showed strong dependency on the trailing edge condition and that the far-field noise predictions can be significantly affected by these changes.",

author = "M{\'a}t{\'e} Sz{\H o}ke and Mahdi Azarpeyvand",

year = "2016",

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TY - CONF

T1 - Trailing edge noise measurement

T2 - 23rd International Congress on Sound and Vibration

AU - Szőke, Máté

AU - Azarpeyvand, Mahdi

PY - 2016/7/14

Y1 - 2016/7/14

N2 - This study aims to investigate the assumptions used in analytical models for the prediction of trailing edge noise and uncertainties involved in the measurement of near-field flow parameters, such as surface pressure spectra, convection velocity and spanwise length scale. The comparison and accuracy analysis of several aerofoil trailing edge noise models is performed. The study investigates the models developed by Amiet, Parchen (TNO) and Brooks-Pope-Marcolini (BPM). To provide the input variables for the different models, a flat plate has been manufactured on which the surface pressure fluctuations are measured using an array of flush mounted microphones and the boundary layer properties are found using hot-wire probes. It was found that the input properties of the investigated trailing edge noise prediction models showed strong dependency on the trailing edge condition and that the far-field noise predictions can be significantly affected by these changes.

AB - This study aims to investigate the assumptions used in analytical models for the prediction of trailing edge noise and uncertainties involved in the measurement of near-field flow parameters, such as surface pressure spectra, convection velocity and spanwise length scale. The comparison and accuracy analysis of several aerofoil trailing edge noise models is performed. The study investigates the models developed by Amiet, Parchen (TNO) and Brooks-Pope-Marcolini (BPM). To provide the input variables for the different models, a flat plate has been manufactured on which the surface pressure fluctuations are measured using an array of flush mounted microphones and the boundary layer properties are found using hot-wire probes. It was found that the input properties of the investigated trailing edge noise prediction models showed strong dependency on the trailing edge condition and that the far-field noise predictions can be significantly affected by these changes.

M3 - Conference Paper

Y2 - 10 July 2016

ER -