Instability of Wind Turbine Wakes Immersed in the Atmospheric Boundary Layer

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dc.contributor.authorViola, F.en_US
dc.contributor.authorIungo, Giacomo V.en_US
dc.contributor.authorCamarri, S.en_US
dc.contributor.authorPorté-Agel, F.en_US
dc.contributor.authorGallaire, F.en_US
dc.contributor.otherSorensen J.N.en_US
dc.contributor.otherIvanell S.en_US
dc.contributor.otherBarney A.en_US
dc.contributor.utdAuthorIungo, Giacomo V.
dc.date.accessioned2016-07-07T21:24:44Z
dc.date.available2016-07-07T21:24:44Z
dc.date.created2015-06en_US
dc.description.abstractIn this work a technique capable to investigate the near-wake stability properties of a wind turbine immersed in the atmospheric boundary layer is presented. Specifically, a 2D local spatial stability analysis is developed in order to take into account typical flow features of real operating wind turbines, such as the presence of the atmospheric boundary layer and the turbulence heterogeneity of the oncoming wind. This stability analysis can be generally applied on either experimental measurements or numerical data. In this paper it was carried out on wind tunnel experiments, for which a downscaled wind turbine is immersed in a turbulent boundary layer. Through spatial stability analysis, the dominant mode in the near wake, i.e. the most amplified one, is characterized and its frequency matches the hub-vortex instability frequency measured in the wind tunnel. As in the case of 10], where an axisymmetric wake condition was investigated, the hub-vortex instability results in a single-helical mode.en_US
dc.identifier.bibliographicCitationViola, F., G. V. Iungo, S. Camarri, F. Porté-Agel, et al. 2015. "Instability of wind turbine wakes immersed in the atmospheric boundary layer." Journal of Physics: Conference Series (4th Wake Conference 2015) 625(1), doi: 10.1088/1742-6596/625/1/012034.en_US
dc.identifier.issn1742-6588en_US
dc.identifier.issue1en_US
dc.identifier.startpage12034en_US
dc.identifier.urihttp://hdl.handle.net/10735.1/4923
dc.identifier.volume625en_US
dc.language.isoenen_US
dc.publisherInstitute of Physics Publishingen_US
dc.relation.urihttp://dx.doi.org/10.1088/1742-6596/625/1/012034en_US
dc.rightsCC BY 3.0 (Attribution)en_US
dc.rights©2015 The Authorsen_US
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en_US
dc.source.journalJournal of Physics: Conference Series (4th Wake Conference, 2015)en_US
dc.subjectAtmospheric movementsen_US
dc.subjectSpatial variables measurementen_US
dc.subjectAtmospheric boundary layeren_US
dc.subjectWakes (Aerodynamics)en_US
dc.subjectBoundary layer (Meteorology)en_US
dc.subjectWind tunnels--Experimentsen_US
dc.subjectTurbulent boundary layeren_US
dc.subjectStability--Analysisen_US
dc.subjectWind turbinesen_US
dc.subjectAtmospheric thermodynamicsen_US
dc.titleInstability of Wind Turbine Wakes Immersed in the Atmospheric Boundary Layeren_US
dc.type.genrearticleen_US

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Iungo, Giacomo V.