Articles | Volume 7, issue 4
Wind Energ. Sci., 7, 1731–1751, 2022
https://doi.org/10.5194/wes-7-1731-2022
Wind Energ. Sci., 7, 1731–1751, 2022
https://doi.org/10.5194/wes-7-1731-2022
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 et al.

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System-level design studies for large rotors
Daniel S. Zalkind, Gavin K. Ananda, Mayank Chetan, Dana P. Martin, Christopher J. Bay, Kathryn E. Johnson, Eric Loth, D. Todd Griffith, Michael S. Selig, and Lucy Y. Pao
Wind Energ. Sci., 4, 595–618, https://doi.org/10.5194/wes-4-595-2019,https://doi.org/10.5194/wes-4-595-2019, 2019
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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.