Assessment of Flutter Prediction and Trends in the Design of Large-Scale Wind Turbine Rotor Blades

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dc.contributor.authorGriffith, D. Todd
dc.contributor.authorChetan, Mayank
dc.contributor.utdAuthorGriffith, D. Todd
dc.contributor.utdAuthorChetan, Mayank
dc.date.accessioned2019-06-28T21:28:09Z
dc.date.available2019-06-28T21:28:09Z
dc.date.created2018-06
dc.description.abstractWith the progression of novel design, material and manufacturing technologies, the wind energy industry has successfully produced larger and larger wind turbine rotor blades while driving down the levelized cost of energy (LCOE). Though the benefits of larger turbine blades are appealing, larger blades are prone to instabilities due to their long and slender nature, and one of the concerning aero-elastic instabilities of these blades is classical flutter. In this work we assess classical flutter prediction tools for predicting flutter speeds in the design of large blades. Flutter predictions are benchmarked against predictions of previous studies. Then, we turn to the main focus of the study, which is design to mitigate flutter. Trends in flutter speeds and flutter mode shapes are examined for a series of 100-meter blade designs. Then, a sensitivity study is performed to assess the impacts of blade design choices (e.g. materials choice and material placement) on flutter speed in a redesign study of a lightweight 100-meter blade with small flutter margin. A new design is developed to demonstrate the ability to increase the flutter speed while reducing blade mass through structural design.
dc.description.departmentErik Jonsson School of Engineering and Computer Science
dc.identifier.bibliographicCitationGriffith, D. T., and M. Chetan. 2018. "Assessment of flutter prediction and trends in the design of large-scale wind turbine rotor blades." Journal of Physics: Conference Series 1037: art. 042008, doi:10.1088/1742-6596/1037/4/042008
dc.identifier.issn1742-6588
dc.identifier.urihttps://hdl.handle.net/10735.1/6661
dc.identifier.volume1037
dc.language.isoen
dc.publisherPublished under licence by IOP Publishing Ltd.
dc.relation.urihttp://dx.doi.org/10.1088/1742-6596/1037/4/042008
dc.rightsCC BY 3.0 (Attribution)
dc.rights©2018 The Authors
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/
dc.source.journalJournal of Physics: Conference Series
dc.subjectFlutter (Aerodynamics)
dc.subjectForecasting
dc.subjectStructural design
dc.subjectTorque
dc.subjectTurbomachine blades
dc.subjectWind power
dc.subjectWind turbines
dc.subjectElastic instabilities
dc.subjectWind turbines--Design and construction
dc.subjectLevelized cost of energies
dc.subjectManufacturing technologies
dc.subjectSensitivity studies
dc.subjectWind energy industry
dc.subjectWind turbine rotors
dc.subjectTurbine components
dc.titleAssessment of Flutter Prediction and Trends in the Design of Large-Scale Wind Turbine Rotor Blades
dc.type.genrearticle

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