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Statistics of LES Simulations of Large Wind Farms
Tech Univ Denmark, DTU Wind Energy, DK-2800 Lyngby, Denmark.ORCID iD: 0000-0002-5935-751X
Tech Univ Denmark, DTU Wind Energy, DK-2800 Lyngby, Denmark.
Tech Univ Denmark, DTU Wind Energy, DK-2800 Lyngby, Denmark.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2016 (English)In: SCIENCE OF MAKING TORQUE FROM WIND (TORQUE 2016), IOP PUBLISHING LTD , 2016, article id 032002Conference paper, Published paper (Refereed)
Abstract [en]

Numerous large eddy simulations are performed of large wind farms using the actuator line method, which has been fully coupled to the aero-elastic code, Flex5. The higher order moments of the flow field inside large wind farms is examined in order to determine a representative reference velocity. The statistical moments appear to collapse and hence the turbulence inside large wind farms can potentially be scaled accordingly. The thrust coefficient is estimated by two different reference velocities and the generic C-T expression by Frandsen. A reference velocity derived from the power production is shown to give very good agreement and furthermore enables the very good estimation of the thrust force using only the steady C-T-curve, even for very short time samples. Finally, the effective turbulence inside large wind farms and the equivalent loads are examined.

Place, publisher, year, edition, pages
IOP PUBLISHING LTD , 2016. article id 032002
Series
Journal of Physics Conference Series, ISSN 1742-6588, E-ISSN 1742-6596 ; 753
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:uu:diva-400866DOI: 10.1088/1742-6596/753/3/032002ISI: 000436325700063OAI: oai:DiVA.org:uu-400866DiVA, id: diva2:1382601
Conference
Conference on Science of Making Torque from Wind (TORQUE), OCT 05-07, 2016, Munich, GERMANY
Funder
Swedish Energy AgencyAvailable from: 2020-01-03 Created: 2020-01-03 Last updated: 2020-01-03Bibliographically approved

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