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Simulation of wind turbine wakes using the actuator line technique
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
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2015 (English)In: Philosophical Transactions. Series A: Mathematical, physical, and engineering science, ISSN 1364-503X, E-ISSN 1471-2962, Vol. 373, no 2035, 20140071- p.Article in journal (Refereed) Published
Abstract [en]

The actuator line technique was introduced as a numerical tool to be employed in combination with large eddy simulations to enable the study of wakes and wake interaction in wind farms. The technique is today largely used for studying basic features of wakes as well as for making performance predictions of wind farms. In this paper, we give a short introduction to the wake problem and the actuator line methodology and present a study in which the technique is employed to determine the near-wake properties of wind turbines. The presented results include a comparison of experimental results of the wake characteristics of the flow around a three-bladed model wind turbine, the development of a simple analytical formula for determining the near-wake length behind a wind turbine and a detailed investigation of wake structures based on proper orthogonal decomposition analysis of numerically generated snapshots of the wake.

Place, publisher, year, edition, pages
2015. Vol. 373, no 2035, 20140071- p.
Keyword [en]
wind turbines, wakes, actuator line, large eddy simulation
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:uu:diva-245339DOI: 10.1098/rsta.2014.0071ISI: 000347845700003OAI: oai:DiVA.org:uu-245339DiVA: diva2:792230
Funder
StandUp for Wind
Available from: 2015-03-03 Created: 2015-02-26 Last updated: 2017-12-04Bibliographically approved

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Ivanell, Stefan

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