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dc.contributor.authorMicallef, Daniel
dc.contributor.authorvan Bussel, Gerard
dc.contributor.authorSimao Ferreira, Carlos
dc.contributor.authorSant, Tonio
dc.date.accessioned2017-03-23T09:35:55Z
dc.date.available2017-03-23T09:35:55Z
dc.date.issued2013
dc.identifier.citationMicallef, D., Bussel, G., Ferreira, C. S., & Sant, T. (2013). An investigation of radial velocities for a horizontal axis wind turbine in axial and yawed flows. Wind Energy, 16(4), 529-544.en_GB
dc.identifier.urihttps://www.um.edu.mt/library/oar//handle/123456789/17762
dc.description.abstractAn experimental and numerical analysis of radial flows in the near wake of a horizontal axis wind turbine is presented for both axial and yawed turbine conditions. Blade performance and wake development are affected because of radial velocities. The phenomenon has not been previously detailed, and current knowledge is limited to the mid to far wake regions. The stereo particle image velocimetry dataset of the model experiments in controlled conditions (MEXICO) rotor is used along with a 3D unsteady potential-flow panel model. The latter is used, after validation, to give a complete description of the radial velocities and give insight into wake development and geometry. For both axial and yawed flows, the radial velocity is found to increase from root to tip with some complex behaviour in the root and tip regions. For axial flow, radial velocities were found to be appreciable. For yawed flow, because of the in-plane freestream component, radial velocities are of the scale of the unperturbed flow especially when the blade is in its leeward and windward positions. The implications of this study are particularly relevant for blade element momentum analysis tools that rely on a purely 2D momentum balance approach. Moreover, this study enables further understanding of the wake development process in the proximity of the rotor.en_GB
dc.language.isoenen_GB
dc.publisherSAGE Publications Ltd.en_GB
dc.rightsinfo:eu-repo/semantics/restrictedAccessen_GB
dc.subjectAxial flowen_GB
dc.subjectHorizontal axis wind turbinesen_GB
dc.subjectWind turbinesen_GB
dc.subjectWind poweren_GB
dc.subjectRenewable energy sourcesen_GB
dc.titleAn investigation of radial velocities for a horizontal axis wind turbine in axial and yawed flowsen_GB
dc.typearticleen_GB
dc.rights.holderThe copyright of this work belongs to the author(s)/publisher. The rights of this work are as defined by the appropriate Copyright Legislation or as modified by any successive legislation. Users may access this work and can make use of the information contained in accordance with the Copyright Legislation provided that the author must be properly acknowledged. Further distribution or reproduction in any format is prohibited without the prior permission of the copyright holder.en_GB
dc.description.reviewedpeer-revieweden_GB
dc.identifier.doi10.1002/we.1503
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Scholarly Works - FacEngME

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