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Cross comparison and uncertainty quantification of aero-acoustic measurements performed in serveral wind tunnels

Vergés i Plaza, Guillem (2022) Cross comparison and uncertainty quantification of aero-acoustic measurements performed in serveral wind tunnels. Masterarbeit, Technical University of Denmark.

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Kurzfassung

Trailing-edge noise can be the dominant noise source of diverse industrial applications, including wind turbines. Noise regulations may limit the power production and installation of new wind farms. There is a need to reduce it. In order to achieve so, we first need to predict it, and to do so we need experimental data to support and validate the new methodologies. A new experimental campaign has been carried out to provide a benchmark of trailing-edge noise applicable to wind turbine noise. It involves a broad range of Reynolds numbers and angles of attack, and covers the noise reduction effect of serrations. This Thesis studies the aforementioned novel data set. The trends of the far-field noise with the forcing of the boundary layer, angle of attack, and Reynolds number have been studied. Furthermore, scaling laws have been applied to compare different test conditions. The collapse quality has been studied, and the differences have been linked to the aerodynamics and possible post-processing effects. The effect of the serrations has also been studied. Additionally, the noise reduction dependence on the aerodynamic loading is discussed. The influence of the microphone locations on the far-field spectra uncertainty is also studied. The Monte-Carlo method has been applied using the Delay-and-Sum and Clean-SC beamformers. The effect of the input uncertainty correlation, wind tunnel velocity, facility, and algorithm are examined.

elib-URL des Eintrags:https://elib.dlr.de/192347/
Dokumentart:Hochschulschrift (Masterarbeit)
Titel:Cross comparison and uncertainty quantification of aero-acoustic measurements performed in serveral wind tunnels
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Vergés i Plaza, GuillemDTU Wind EnergyNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:Juli 2022
Erschienen in:DTU Wind Energy-M-0499
Referierte Publikation:Ja
Open Access:Nein
Seitenanzahl:93
Status:veröffentlicht
Stichwörter:trailing-edge noise, wind energy, IEA Wind TCP Task 39, serrations, wind tunnel measurement data base, aeroacoustics, AWB
Institution:Technical University of Denmark
Abteilung:Department of Wind Energy
HGF - Forschungsbereich:Energie
HGF - Programm:Materialien und Technologien für die Energiewende
HGF - Programmthema:Photovoltaik und Windenergie
DLR - Schwerpunkt:Energie
DLR - Forschungsgebiet:E SW - Solar- und Windenergie
DLR - Teilgebiet (Projekt, Vorhaben):E - Windenergie
Standort: Braunschweig
Institute & Einrichtungen:Institut für Aerodynamik und Strömungstechnik > Windenergie
Hinterlegt von: Herr, Michaela
Hinterlegt am:16 Dez 2022 09:07
Letzte Änderung:16 Dez 2022 09:07

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