Sensitivity of Wind Turbine Airfoil Sections to Geometry Variations Inherent in Modular Blades

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dc.contributorVirginia Tech. Department of Mechanical Engineering. Center for Renewable Energy and Aerodynamic Testingen
dc.contributorGE Power and Wateren
dc.contributorVirginia Tech. Aerospace and Ocean Engineering Departmenten
dc.contributor.authorBrown, Kennethen
dc.contributor.authorMolinaro, Nicken
dc.contributor.authorMeyers, Timothyen
dc.contributor.authorBorgoltz, Aurelienen
dc.contributor.authorDevenport, William J.en
dc.contributor.authorLuedke, Jonathanen
dc.contributor.authorPesetsky, Daviden
dc.date.accessioned2015-07-28T18:27:05Zen
dc.date.available2015-07-28T18:27:05Zen
dc.date.issued2015-06-09en
dc.description.abstractIn the ongoing work to increase the efficiency of large-scale, horizontal-axis wind turbines, the modular blade concept has been proposed. The aerodynamic performance of modular blades, whose baseline profile remains unchanged from conventional blades but who are susceptible to a larger degree of variation in both manufacturing tolerances and fabrication materials, is yet unknown. This paper works towards quantifying the aerodynamic effects of variations to a baseline wind turbine section, specifically, examining the effects of offsets in the leading edge of the profile and the use of a tensioned fabric as a flow surface over the aft of the profile. Wind tunnel tests were performed on a modified DU91-W2-250 section with an offset in the leading edge and cavities in the aft that were alternatively fitted with fabric-covered panels and rigid aluminum panels. Measurements included lift, drag, airfoil surface pressures, and surface deflection of the fabric material. Preliminary results show the modifications have a noticeable impact on the aerodynamics of the section, including altered surface pressure distributions and wake characteristics.en
dc.description.notesSession 1A - Research and Development, and Technologyen
dc.description.notesPowerPoint contains presenter's notesen
dc.format.extent48 pagesen
dc.format.mimetypeapplication/vnd.ms-powerpointen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBrown, K., Molinaro, N., Meyers, T., Borgoltz, A., Devenport, W., Luedke, J., & Pesetsky, D. (2015, June). Sensitivity of wind turbine airfoil sections to geometry variations inherent in modular blades. Paper presented at the North American Wind Energy Academy 2015 Symposium, Blacksburg, VA.en
dc.identifier.urihttp://hdl.handle.net/10919/54663en
dc.language.isoen_USen
dc.publisherVirginia Techen
dc.relation.ispartofNorth American Wind Energy Academy 2015 Symposiumen
dc.rightsIn Copyrighten
dc.rights.holderBrown, Kennethen
dc.rights.holderMolinaro, Nicken
dc.rights.holderMeyers, Timothyen
dc.rights.holderBorgoltz, Aurelienen
dc.rights.holderDevenport, Williamen
dc.rights.holderLuedke, Jonathanen
dc.rights.holderPesetsky, Daviden
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.titleSensitivity of Wind Turbine Airfoil Sections to Geometry Variations Inherent in Modular Bladesen
dc.typePresentationen
dc.type.dcmitypeTexten

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