Articles | Volume 9, issue 1
https://doi.org/10.5194/wes-9-203-2024
https://doi.org/10.5194/wes-9-203-2024
Research article
 | 
22 Jan 2024
Research article |  | 22 Jan 2024

Influence of rotor blade flexibility on the near-wake behavior of the NREL 5 MW wind turbine

Leo Höning, Laura J. Lukassen, Bernhard Stoevesandt, and Iván Herráez

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Cited articles

Ainslie, J. F.: Calculating the flowfield in the wake of wind turbines, J. Wind Eng. Ind. Aerod., 27, 213–224, 1988. a
Arnold, M. and Brüls, O.: Convergence of the generelized-α scheme for constrained mechanical systems, Multibody Syst. Dyn., 18, 185–202, 2007. a
Dose, B.: Fluid-structure coupled computations of wind turbine rotors by means of CFD, PhD thesis, University of Oldenburg, https://plus.orbis-oldenburg.de/permalink/f/jd1i1v/49GBVUOB_ALMA21255067610003501 (last access: 20 January 2023), 2018. a, b, c
Dose, B., Rahimi, H., Herráez, I, Stoevesandt, B., and Peinke, J.: Fluid-structure coupled computations of the NREL 5 MW wind turbine by means of CFD, Renew. Energ., 129, 591–605, https://doi.org/10.1016/j.renene.2018.05.064, 2018. a, b, c, d, e, f, g, h
Global Wind Energy Council: Global Wind Report, , https://gwec.net/global-wind-report-2021/, (last access: April 2022), 2021. a
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Short summary
This study analyzes the impact of wind turbine rotor blade flexibility on the aerodynamic loading of the blades and the consequential wind characteristics in the near wake of the turbine. It is shown that gravitation leads to rotational periodic fluctuations of blade loading, which directly impacts the trajectory of the blade tip vortex at different rotor blade positions while also resulting in a non-uniform wind velocity deficit in the wake of the wind turbine.
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