Influence of rotor blade flexibility on the near-wake behavior of the NREL 5 MW wind turbine
-
Published:2024-01-22
Issue:1
Volume:9
Page:203-218
-
ISSN:2366-7451
-
Container-title:Wind Energy Science
-
language:en
-
Short-container-title:Wind Energ. Sci.
Author:
Höning Leo, Lukassen Laura J., Stoevesandt BernhardORCID, Herráez Iván
Abstract
Abstract. High-fidelity computational fluid dynamics (CFD) simulations of the National Renewable Energy Laboratory (NREL) 5 MW wind turbine rotor are performed, comparing the aerodynamic behavior of flexible and rigid blades with respect to local blade quantities as well as the wake properties. The main focus has been set on rotational periodic quantities of blade loading and fluid velocity magnitudes in relation with the blade tip vortex trajectories describing the development of those quantities in the near wake. The results show that the turbine loading in a quasi-steady flow field is mainly influenced by blade deflections due to gravitation. Deforming blades change the aerodynamic behavior, which in turn influences the surrounding flow field, leading to non-uniform wake characteristics with respect to speed and shape.
Publisher
Copernicus GmbH
Subject
Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment
Reference42 articles.
1. Ainslie, J. F.: Calculating the flowfield in the wake of wind turbines, J. Wind Eng. Ind. Aerod., 27, 213–224, 1988. a 2. Arnold, M. and Brüls, O.: Convergence of the generelized-α scheme for constrained mechanical systems, Multibody Syst. Dyn., 18, 185–202, 2007. a 3. 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 4. 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 5. Global Wind Energy Council: Global Wind Report, , https://gwec.net/global-wind-report-2021/, (last access: April 2022), 2021. a
|
|