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Wind turbine noise code benchmark: A comparison and verification exercise

Herr, Michaela and Appel, Christina and Bertragnolio, Franck and Fischer, Andreas and Seel, Ferdinand and Lutz, Thorsten and Boorsma, Koen and Schepers, Gerard and Restrepo Botero, Miguel and Casalino, Damiano and Van der der Velden, Wouter and Sucameli, Carlo R. and Bortolotti, Pietro (2023) Wind turbine noise code benchmark: A comparison and verification exercise. Wind Turbine Noise, 2023-06-21 - 2023-06-23, Dublin.

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In a number of institutions and companies, researchers and engineers are developing numerical models and frameworks that are used to predict the aerodynamic noise emissions from wind turbine rotors. The simulation codes range from empirically tuned engineering models to high-fidelity computational ones. Their common feature is the fact that they all specifically model the main aerodynamic noise mechanisms occurring at the rotating blades (namely, the turbulent boundary layer): trailing-edge and turbulent inflow noise. Nevertheless, different modelling techniques and implementations may generate different results, even when assessed on the same rotor design and operating conditions, whicmodels. Trailing-edge noise is put at the forefront of the present study, as it is recognized to be the main source of audible noise from modern wind turbines. The present benchmark aims at comparing the results from different modelling approaches and drawing some conclusions from these comparisons. This effort, denoted as Wind Turbine Noise Code benchmark, was initiated in 2019 as a joint activity between the IEA Wind Task 39 (Quiet Wind Turbine Technology) and Task 29 (Detailed Aerodynamics of Wind Turbines, now Task 47). In addition to the investigation of the noise emissions themselves, the rotor aerodynamic characteristics are investigated, as they are the source of the noise generation mechanisms discussed herein. A number of test cases are defined, and the aerodynamic and aeroacoustic predictions from the various models are compared. A fair agreement between the aerodynamic predictions is observed. There exist some discrepancies between the different noise prediction methods, but it is difficult to conclude if one methodology is better than another in order to design a wind turbine with noise as a constraint.

Item URL in elib:https://elib.dlr.de/200923/
Document Type:Conference or Workshop Item (Speech)
Title:Wind turbine noise code benchmark: A comparison and verification exercise
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Herr, MichaelaUNSPECIFIEDhttps://orcid.org/0009-0000-7275-7078154899519
Bertragnolio, FranckDTU Wind Energy SystemsUNSPECIFIEDUNSPECIFIED
Fischer, AndreasDTU Wind Energy SystemsUNSPECIFIEDUNSPECIFIED
Seel, FerdinandUniversität StuttgartUNSPECIFIEDUNSPECIFIED
Lutz, ThorstenUniversität StuttgartUNSPECIFIEDUNSPECIFIED
Boorsma, KoenTNO Energy Transition NetherlandsUNSPECIFIEDUNSPECIFIED
Schepers, GerardTNO Energy Transition NetherlandsUNSPECIFIEDUNSPECIFIED
Restrepo Botero, MiguelTNO Energy Transition NetherlandsUNSPECIFIEDUNSPECIFIED
Casalino, DamianoDassault Systèmes GmbH StuttgartUNSPECIFIEDUNSPECIFIED
Van der der Velden, WouterDassault Systèmes GmbH StuttgartUNSPECIFIEDUNSPECIFIED
Bortolotti, PietroNational Wind Technology Center USAUNSPECIFIEDUNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Wind turbine noice, benchmark, verification, noise emissions, trailing edge, source of aerodynamic broadbend noise, simulations methods, computational methods
Event Title:Wind Turbine Noise
Event Location:Dublin
Event Type:international Conference
Event Start Date:21 June 2023
Event End Date:23 June 2023
Organizer:INCE Europe
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Photovoltaics and Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Wind Energy
Deposited By: Stebner, Margrit Elisabeth
Deposited On:14 Dec 2023 12:04
Last Modified:24 Apr 2024 21:01

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