Numerical analysis of a Wells turbine with flexible trailing blade edges

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dc.contributor Woodbury, Keith
dc.contributor Srinivasan, Kalyan
dc.contributor Halpern, David
dc.contributor.advisor MacPhee, David W. Kincaid, Kellis 2020-09-30T17:24:55Z 2020-09-30T17:24:55Z 2020
dc.identifier.other u0015_0000001_0003621
dc.identifier.other Kincaid_alatus_0004M_14096
dc.description Electronic Thesis or Dissertation
dc.description.abstract This thesis examines the effect of a partially morphing blade on the performance of a Wells turbine, for the purpose of wave energy conversion. A numerical model is constructed using Foam-Extend, v4.0, incorporating a fluid domain as well as a solid region and strongly coupled fluid-structure interaction algorithm. Once the model is validated against previous experimental work, the turbine tip gap and elastic modulus of the solid region are varied, and the resulting performance and flow field changes are examined. Each turbine with morphing blades performed better than its corresponding rigid counterpart, regardless of the degree of flexibility introduced to the blade. A maximum increase in torque output of nearly 17% was observed in some cases, due to the combined effect of blade deformation into the tip gap area as well as axial deformation, resulting in a change of local angle of attack. These increases were largely in part due to the favorable changes in pressure field resulting from the deformation of the blade under inertial and aerodynamic forces.
dc.format.extent 122 p.
dc.format.medium electronic
dc.format.mimetype application/pdf
dc.language English
dc.language.iso en_US
dc.publisher University of Alabama Libraries
dc.relation.ispartof The University of Alabama Electronic Theses and Dissertations
dc.relation.ispartof The University of Alabama Libraries Digital Collections
dc.relation.hasversion born digital
dc.rights All rights reserved by the author unless otherwise indicated.
dc.subject.other Mechanical engineering
dc.title Numerical analysis of a Wells turbine with flexible trailing blade edges
dc.type thesis
dc.type text University of Alabama. Department of Mechanical Engineering Mechanical Engineering The University of Alabama master's M.S.

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