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- W2893076152 abstract "This thesis studies a new concept for flexible wind turbine blades. Flexible wings and their advantages have been the topic of various research projects. To realize a flexible wing construction, different concepts have been used including morphing wing, telescopic spars or using materials in the construction of the wing. The membrane blade concept, which is studied within the scope of this thesis, is originally an example of a passively controlled structure, whereas one could think of actuation in future realizations.With the increase in a wind turbine's rotor diameter, aeroelastic simulation of rotor blades to study their unsteady response to disturbances or control actions has become more and more important. To realize the so-called smart rotors, both active and passive aeroelastic devices have been employed for load mitigation of wind turbines. Within this contribution, a simulation environment for multi-fidelity aeroelastic analysis of wind turbine blades is presented. The goal of the multi-fidelity analysis is realized by using three different approaches for calculating the aerodynamic loading on a wind turbine, which include: blade element momentum (BEM) method, vortex panel method and computational fluid dynamics.The developed multi-fidelity analysis workflow is used for analysis of a sample membrane blade based on the NASA-Ames phase VI wind turbine. At each level of modeling, the comparison between the performance of the membrane blade and the rigid baseline blade is made. Furthermore, a new combined methodology based on panel-BEM coupling for using the blade element momentum method for the analysis of membrane blades with form varying cross-section is proposed and tested for the studied sample membrane blade. The studied membrane blade demonstrates advantages over the baseline rigid blade in terms of power generation which should be mainly attributed to the increase of profile's camber due to membrane's deflection." @default.
- W2893076152 created "2018-10-05" @default.
- W2893076152 creator A5028087416 @default.
- W2893076152 date "2017-01-01" @default.
- W2893076152 modified "2023-09-27" @default.
- W2893076152 title "Multi-Fidelity Aeroelastic Analysis of Flexible Membrane Wind Turbine Blades" @default.
- W2893076152 hasPublicationYear "2017" @default.
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