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Title: A study on the aerodynamics of a floating wind turbine rotor
Authors: Farrugia, Russell
Sant, Tonio
Micallef, Daniel
Keywords: Wind turbines
Wind turbines -- Aerodynamics
Wind power
Issue Date: 2016
Publisher: Elsevier Ltd.
Citation: Farrugia, R., Sant, T., & Micallef, D. (2016). A study on the aerodynamics of a floating wind turbine rotor. Renewable Energy, 86, 770-784.
Abstract: Understanding the impact of wave induced effects on the aerodynamic performance of Floating Offshore Wind Turbines (FOWTs) is crucial towards developing floating wind turbines cost-effectively to harness wind energy in deep water sites. The complexity of the wake of an FOWT has not yet been fully understood and both experimental together with numerical techniques are essential in this regard. An open source free-wake vortex code was used to determine whether experimentally-observed effects of the wave motions on floating rotor aerodynamics could be reproduced numerically by the lifting line method. From free-wake simulations on a large scale FOWT, complex wake phenomena were observed under the impact of extreme wave conditions. It was found that the difference between the mean power coefficient under platform surge conditions and the steady power coefficient depends on platform surge frequency, surge amplitude and the rotor operating conditions. Using the results from the free-wake vortex simulations, an analysis of a number of wind turbine wake characteristics under floating conditions was carried out in order to identify possible reasons behind the increase in the aerodynamic torque and thrust variations with tip speed ratio.
Description: The research work disclosed in this publication is partially funded by the Strategic Educational Pathways Scholarship (Malta). The scholarship is part-financed by the European Union - European Social Fund. This research has been carried out using computational facilities procured through the European Regional Development Fund, Project ERDF-080 A Supercomputing Laboratory for the University of Malta.
Appears in Collections:Scholarly Works - FacBenED
Scholarly Works - FacEngME
Scholarly Works - FacICTMN

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