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3D-simulation of sound propagation through the wake of a wind turbine: Impact of the diurnal variability

Heimann, Dietrich and Englberger, Antonia (2018) 3D-simulation of sound propagation through the wake of a wind turbine: Impact of the diurnal variability. Applied Acoustics, 141, pp. 393-402. Elsevier. DOI: 10.1016/j.apacoust.2018.06.005 ISSN 0003-682X

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Official URL: http://dx.doi.org/10.1016/j.apacoust.2018.06.005

Abstract

Coupled three-dimensional numerical flow and sound propagation simulations were performed for four different times of a diurnal cycle in the area downwind of a wind energy converter with a hub height of 100 m and a rotor radius of 50 m. The sound propagation from the turbine is subject to vertical and lateral refraction in the wind speed deficit of the wake. The latter is influenced by the varying static stability and turbulence condition of the atmospheric boundary layer. The sound level near the ground is significantly increased by the atmospheric and wake-induced refraction for distances larger than eight times the rotor diameter. This increase is strongest in the morning and evening hours when it locally amounts up to 18 dB. Three-dimensional propagation effects are evident and cannot be neglected. A significant sound-level variation during the turbine revolution is simulated for the evening situation in the far field.

Item URL in elib:https://elib.dlr.de/121437/
Document Type:Article
Title:3D-simulation of sound propagation through the wake of a wind turbine: Impact of the diurnal variability
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Heimann, DietrichDLR, IPAUNSPECIFIED
Englberger, AntoniaDLR, IPAUNSPECIFIED
Date:2018
Journal or Publication Title:Applied Acoustics
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:141
DOI :10.1016/j.apacoust.2018.06.005
Page Range:pp. 393-402
Publisher:Elsevier
ISSN:0003-682X
Status:Published
Keywords:three-dimensional numerical flow, vertical and lateral refraction, sound-level
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
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Modelling
Institute of Atmospheric Physics > Transport Meteorology
Deposited By: Ziegele, Brigitte
Deposited On:22 Aug 2018 17:45
Last Modified:06 Sep 2019 15:17

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