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The upstream flow of a wind turbine: blockage effect
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
Swedish Defence Research Agency .
KTH Royal Institute of Technology.
2011 (English)In: Wind Energy, ISSN 1095-4244, E-ISSN 1099-1824Article in journal (Refereed) Published
Abstract [en]

The flow upstream a wind turbine is studied in order to investigate blockage effects. We use rotating wind turbine models in a wind tunnel, where velocity measurements have been made both with hot-wire anemometry up to approximately 4.5 diameters (D) upstream the turbine, as well as laser particle image velocimetry measurements close to the turbine rotor. Also, numerical simulations have been carried out by means of a finite volume code. The measurements show, among other things, that the flow is affected more than 3D upstream the rotor plane.

Place, publisher, year, edition, pages
2011.
Keyword [en]
upstream flow; blockage effect; power curve measurements
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-238278DOI: 10.1002/we.451OAI: oai:DiVA.org:uu-238278DiVA: diva2:770737
Available from: 2014-12-11 Created: 2014-12-11 Last updated: 2017-12-05

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