Wind Energy Science
Wind Energy Science
WES
Articles | Volume 7, issue 4
Articles | Volume 7, issue 4
https://doi.org/10.5194/wes-7-1731-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-7-1731-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 7, issue 4
Research article
 | 
22 Aug 2022
Research article |  | 22 Aug 2022

Flutter behavior of highly flexible blades for two- and three-bladed wind turbines

Mayank Chetan, Shulong Yao, and D. Todd Griffith

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Cited articles

Abdel Hafeez, M. M. and El-Badawy, A. A.: Flutter Limit Investigation for a Horizontal Axis Wind Turbine Blade, J. Vibrat. Acoust., 140, 041014, https://doi.org/10.1115/1.4039402, 2018. a
Bay, C. J., Damiani, R., Fingersh, L. J., Hughes, S., Chetan, M., Yao, S., Griffith, D. T., Ananda, G. K., Selig, M. S., Zalkind, D., Pao, L., Martin, D., Johnson, K., Kaminski, M., and Loth, E.: Design and Testing of a Scaled Demonstrator Turbine at the National Wind Technology Center, in: AIAA Scitech 2019 Forum, American Institute of Aeronautics and Astronautics, San Diego, California, https://doi.org/10.2514/6.2019-1068, 2019. a
Berg, J. C. and Resor, B. R.: Numerical manufacturing and design tool (NuMAD V2.0) for wind turbine blades: User's guide, Technical Report No. SAND2012-728, Sandia National Laboratories, Albuquerque, NM, https://doi.org/10.2172/1051715, 2012. a
Bergami, L.: Aeroservoelastic stability of a 2D airfoil section equipped with a trailing edge flap, Danmarks Tekniske Universitet, Risø Nationallaboratoriet for Bæredygtig Energi, https://orbit.dtu.dk/en/publications/aeroelastic-stability-of-a-2d-airfoil-section-equipped-with-a-tra (last access: August 2022), 2008. a
Bir, G. S.: User's Guide to PreComp (Pre-Processor for Computing Composite Blade Properties), Tech. Rep. NREL/TP-500-38929, NREL – National Renewable Energy Lab., Golden, CO, USA, https://doi.org/10.2172/876556, 2006. a
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Short summary
Though large wind turbines are appealing to reduce costs, larger blades are prone to aero-elastic instabilities due to their long, slender, highly flexible nature. New rotor concepts are emerging including two-bladed rotors and downwind configurations. We introduce a comprehensive evaluation of flutter behavior including classical flutter and edgewise vibration for large-scale two-bladed rotors. The study aims to provide designers with insights to mitigate flutter in future designs.
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