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Evaluation of Wind Turbine Noise based on Numerical Simulation Methods

Faßmann, Benjamin and Reiche, Nils and Ewert, Roland and Herr, Michaela and Delfs, Jan Werner (2018) Evaluation of Wind Turbine Noise based on Numerical Simulation Methods. In: AIAA Aviation 2018 -- AIAA/CEAS Aeroacoustics Conference. 24th AIAA/CEAS Aeroacoustics Conference, 25-29 June 2018, Atlanta, Georgia U.S.. doi: 10.2514/6.2018-3924. ISBN 978-1-62410-560-9.

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Official URL: https://arc.aiaa.org/doi/abs/10.2514/6.2018-3924


The objective of this paper is to propose a more general, largely non-empirical prediction method for sound spectra and directivity functions based on high fidelity 2D computations. In its current state the approach concentrates on turbulent boundary-layer trailing-edge noise (TBL-TEN) but could be later expanded to include also leading-edge / inflow interaction- and TBL separation noise. In the current work an aeroacoustic data base is set up consisting of pre-computed aeroacoustic results of independent computations for different airfoils, different representative angles of attack, and different flow conditions. Making use of these data, the authors estimate the sound emission of single blade elements. The suggested method allows for a representation of all operational conditions along the acoustically relevant part of the outer rotor blade. The method is verified at certain test conditions. It is applied to angles of attack and blended airfoil geometries not originally included in the data base.

Item URL in elib:https://elib.dlr.de/124523/
Document Type:Conference or Workshop Item (Speech)
Title:Evaluation of Wind Turbine Noise based on Numerical Simulation Methods
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Faßmann, BenjaminBenjamin.Fassmann (at) dlr.deUNSPECIFIED
Reiche, NilsNils.Reiche (at) dlr.deUNSPECIFIED
Ewert, RolandRoland.Ewert (at) dlr.deUNSPECIFIED
Herr, MichaelaMichaela.Herr (at) dlr.deUNSPECIFIED
Delfs, Jan WernerJan.Delfs (at) dlr.deUNSPECIFIED
Date:June 2018
Journal or Publication Title:AIAA Aviation 2018 -- AIAA/CEAS Aeroacoustics Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.2514/6.2018-3924
Keywords:Computational Aeroacoustics, Prediction, Wind Turbine Noise, Interpolation
Event Title:24th AIAA/CEAS Aeroacoustics Conference
Event Location:Atlanta, Georgia U.S.
Event Type:international Conference
Event Dates:25-29 June 2018
HGF - Research field:Energy
HGF - Program:Renewable Energies
HGF - Program Themes:Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy (old)
Location: Braunschweig
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Technical Acoustics
Deposited By: Faßmann, Benjamin
Deposited On:13 Dec 2018 10:32
Last Modified:13 Dec 2018 10:32

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