Validation of noise propagation models against detailed flow and acoustic measurements

Wen Zhong Shen*, Matias Sessarego, Jiufa Cao, Camilla Marie Nyborg, Kurt Schaldemose Hansen, Franck Bertagnolio, Helge A. Madsen, Per Hansen, Andrea Vignaroli, Thomas Sørensen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

In this paper, four noise propagation models including the parabolic-equation based WindSTAR model, ray-tracing based Nord2000 model, Danish regulation BEK 135 model and ISO 9613-2 standard model are validated against flow and acoustic measurements of a sound source created from a speaker located at a turbine hub of 109 m height. The flow was measured with a fully instrumented met-mast at 350 m and 218 degrees from the turbine tower base. The sound was measured with 11 microphones: 8 were along a line of 45 degrees and a distance up to 1200 m away from the sound source, 3 were located at IEC positions, and 1 microphone close to the speaker, which was used to measure the source strength. White noise and 1/1 band-limited white noise sound at 2 different wind shears with exponents of 0.12 and 0.23 are used for validation. Results show that an overall agreement between experiment and computation is reached for all the numerical models. Among the 4 numerical models, Nord2000 gives the best prediction for the nearfield microphones of mic 4-mic 6 and WindSTAR gives the best prediction for the far-field microphones of mic 7 and mic 8.
Original languageEnglish
Article number052023
Book seriesJournal of Physics: Conference Series
Volume1618
Issue number5
Number of pages11
ISSN1742-6596
DOIs
Publication statusPublished - 2020
EventTORQUE 2020 - Online event, Netherlands
Duration: 28 Sep 20202 Oct 2020
https://www.torque2020.org/

Conference

ConferenceTORQUE 2020
LocationOnline event
CountryNetherlands
Period28/09/202002/10/2020
Internet address

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