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Noise directivity from a vertical axis wind turbine
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Bio- och miljösystemforskning (BLESS), Energiteknik. Division for Electricity, Department of Engineering Sciences, Uppsala University, Uppsala, Sweden.ORCID-id: 0000-0001-9982-5317
Marcus Wallenberg Laboratory, Department of Aeronautical and Vehicle Engineering, KTH Royal Institute of Technology, Stockholm, Sweden.ORCID-id: 0000-0003-2294-9041
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Bio- och miljösystemforskning (BLESS), Energiteknik.
Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, Maskinteknisk produktframtagning (MTEK).ORCID-id: 0000-0002-4826-019X
Vise andre og tillknytning
2015 (engelsk)Inngår i: Proceedings of the 6th International Conference on Wind Turbine Noise 2015, New Brighton: INCE/Europe , 2015Konferansepaper, Publicerat paper (Annet vitenskapelig)
Abstract [en]

The directivity of wind turbine noise is of widespread interest and has received attention over an extended period. The reason for this is partly that noise optimization procedures can be implemented in order to increase the efficiency of the power output. Although directivity of horizontal axis wind turbines (HAWTs) are well understood, the directivity pattern around vertical axis wind turbines (VAWTs) are less well investigated.This paper presents measurements of directivity on a 200 kW VAWT, a so called H-rotor, with variable speed and a tower height of 40 m. The turbine, which is situated in a flat agricultural landscape close to Falkenberg at the Swedish west coast, is one of the world’s largest today operational VAWTs. Experimental results as well as a theoretical model based on the turbulent-boundary-layer trailing-edge (TBL-TE) noise suggest higher noise levels upwind of the rotor and the lowest noise levels in the perpendicular directions. Moreover, modulation analysis of the measurements indicates the presence of modulations but the results are inconclusive.

sted, utgiver, år, opplag, sider
New Brighton: INCE/Europe , 2015.
HSV kategori
Identifikatorer
URN: urn:nbn:se:hh:diva-28164OAI: oai:DiVA.org:hh-28164DiVA, id: diva2:808008
Konferanse
The 6th International Conference on Wind Turbine Noise (WTN2015), Glasgow, Scotland, 20-23 April, 2015
Forskningsfinansiär
StandUpTilgjengelig fra: 2015-04-27 Laget: 2015-04-27 Sist oppdatert: 2018-03-22bibliografisk kontrollert

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