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dc.contributor.advisorSætran, Lars
dc.contributor.authorJalil, Abdur Rahman
dc.date.accessioned2019-09-11T08:26:31Z
dc.date.created2015-06-09
dc.date.issued2015
dc.identifierntnudaim:12997
dc.identifier.urihttp://hdl.handle.net/11250/2614807
dc.description.abstractFull wake measurements have been performed on a model wind turbine at NTNU s wind tunnel to investigate the impact of shear flow compared to uniform flow on the wake flow. Mean and turbulent velocity measurements have been performed at two downstream distances x/D = 2.77 and x/D = 5.18, while the turbine was operating at optimal tip speed ratio λ= 6. Shear flow wake shows slower recovery of velocity deficits for the lower region of the wake, while the opposite is observed for the upper section of the wake. The centre of the rotor swept area is affected by the shear flow, where low velocity fluid is transported upwards, while high velocity fluid is transported down by the wake rotation. Turbulence intensity levels are similar for the closer wake, although shows slightly decreased values downstream for the lower region of the shear wake, compared to that of the uniform flow wake. A slight horizontal movement of the tower wake was observed for the shear flow wake.en
dc.languageeng
dc.publisherNTNU
dc.subjectProduktutvikling og produksjon, Energi-, prosess- og strømningsteknikken
dc.titleWind Turbine Wake Interactions - The Influence of Shear on a Wind Turbine Wakeen
dc.typeMaster thesisen
dc.source.pagenumber13
dc.contributor.departmentNorges teknisk-naturvitenskapelige universitet, Fakultet for ingeniørvitenskap,Institutt for energi- og prosessteknikknb_NO
dc.date.embargoenddate10000-01-01


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