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dc.contributor.authorAhmadi, Mohammad H. B.
dc.contributor.authorYang, Zhiyin
dc.date.accessioned2021-10-15T14:33:03Z
dc.date.available2021-10-15T14:33:03Z
dc.date.issued2021-09-16
dc.identifier.citationAhmadi, M.H. and Yang, Z., (2021). 'Influence of Yawed Wind Flow on the Blade Forces/Bending Moments and Blade Elastic Torsion for an Axial-Flow Wind Turbine'. ASME Turbo Expo 2021: Turbomachinery Technical Conference and Exposition, 7-11 June, Online. New York: American Society of Mechanical Engineers., pp. 1-12.en_US
dc.identifier.isbn9780791884898
dc.identifier.doi10.1115/gt2021-60237
dc.identifier.urihttp://hdl.handle.net/10545/626040
dc.description.abstractEffects of yawed incoming flow on wind turbine blades forces and root bending moments (RBMs) are not fully understood. To advance our current understanding, numerical studies of a small-scale three-bladed horizontal axis wind turbine at TSR = 6.7 with yaw angles of zero and 45° have been carried out to examine the variations of blade and rotor loading due to the yawed incoming flow. An approach combining Large Eddy Simulation (LES) with Actuator Line Modelling (ALM) has been employed in the present study. The predicted phase-averaged blade forces reveal that the blade tangential force, in-plane RBM and power coefficient are much more sensitive to the upstream streamwise velocity variations and are much more strongly affected than the blade axial force, out-of-plane RBM and thrust coefficient. It also shows that for yawed incoming flows the blade axial force to the blade tangential force ratio fluctuates significantly during one rotor revolution, resulting in large variations of the blade elastic torsion and that the total blade force (magnitude and direction) undergoes a non-linear change in the circumferential and radial directions, which will likely lead to the reduction in the turbine operational life significantly, especially for long lightweight blades of large size wind turbines.en_US
dc.description.sponsorshipN/Aen_US
dc.language.isoenen_US
dc.publisherAmerican Society of Mechanical Engineersen_US
dc.relation.urlhttps://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2021/84898/V001T40A004/1119651en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttps://www.asme.org/publications-submissions/publishing-information/legal-policies
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.sourceVolume 1: Aircraft Engine; Fans and Blowers; Marine; Wind Energy; Scholar Lecture
dc.subjectAxial-flow wind turbineen_US
dc.subjectLESen_US
dc.subjectALMen_US
dc.titleInfluence of Yawed Wind Flow on the Blade Forces/Bending Moments and Blade Elastic Torsion for an Axial-Flow Wind Turbineen_US
dc.typeMeetings and Proceedingsen_US
dc.contributor.departmentUniversity of Derbyen_US
dcterms.dateAccepted2021-02
dc.author.detail784574en_US


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