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The impact of the aerodynamic model fidelity on the aeroelastic response of a multi-megawatt wind turbine

Author

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  • Sayed, M.
  • Klein, L.
  • Lutz, Th.
  • Krämer, E.

Abstract

Currently, the wind turbine size is increasing dramatically, and the blades are experiencing large deformations. Accordingly, the aerodynamic force distributions over the blades are changed, and hence aeroelastic analysis has become of great importance. The state-of-the-art simulation tools for wind turbines aeroelasticity utilize engineering models to find the aeroelastic response. These tools use simplified methods such as BEM to find the unsteady aerodynamic loads and 1D structural models to determine the deformations. They are computationally cheap, but they are based on different corrections to account for the unsteadiness and the 3D effects. These corrections might lead to a decrease in model accuracy. Therefore, the objective of the present studies is to compare the results of engineering models to CFD-based aeroelastic simulations that do require less empirical modeling. The Multi-Body Simulation (MBS) solver SIMPACK is used to determine the dynamic response of the rotor and the blade aerodynamic loads were calculated by an integrated third-party module (AeroDyn) based on BEM. The block-structured CFD solver FLOWer is utilized to obtain the aerodynamic blade loads based on the time-accurate solution of the unsteady Reynolds-averaged Navier-Stokes equations. The engineering model predicted smaller power and thrust compared to the values obtained using the high-fidelity CFD-based aeroelastic model. Moreover, 1%–1.5% increase in the power and thrust was predicted from the engineering model by increasing the number of polars used along the blade.

Suggested Citation

  • Sayed, M. & Klein, L. & Lutz, Th. & Krämer, E., 2019. "The impact of the aerodynamic model fidelity on the aeroelastic response of a multi-megawatt wind turbine," Renewable Energy, Elsevier, vol. 140(C), pages 304-318.
  • Handle: RePEc:eee:renene:v:140:y:2019:i:c:p:304-318
    DOI: 10.1016/j.renene.2019.03.046
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    Citations

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    Cited by:

    1. Torres, Antonio & Gil, Javier & Plaza, Aitor & Aginaga, Jokin, 2024. "4P operational harmonic and blade vibration in wind turbines: A real case study of an active yaw system and a concrete tower," Renewable Energy, Elsevier, vol. 227(C).
    2. Wang, Yize & Liu, Zhenqing & Ma, Xueyun, 2023. "Improvement of tuned rolling cylinder damper for wind turbine tower vibration control considering real wind distribution," Renewable Energy, Elsevier, vol. 216(C).
    3. Andrés Guggeri & Martín Draper, 2019. "Large Eddy Simulation of an Onshore Wind Farm with the Actuator Line Model Including Wind Turbine’s Control below and above Rated Wind Speed," Energies, MDPI, vol. 12(18), pages 1-21, September.
    4. Li, Zhiguo & Gao, Zhiying & Dai, Yuanjun & Wen, Caifeng & Zhang, Liru & Wang, Jianwen, 2023. "Unsteady aeroelastic performance analysis for large-scale megawatt wind turbines based on a novel aeroelastic coupling model," Renewable Energy, Elsevier, vol. 218(C).
    5. Lapa, Gabriel Vicentin Pereira & Gay Neto, Alfredo & Franzini, Guilherme Rosa, 2023. "Effects of blade torsion on IEA 15MW turbine rotor operation," Renewable Energy, Elsevier, vol. 219(P2).
    6. Meng, Hang & Jin, Danyang & Li, Li & Liu, Yongqian, 2022. "Analytical and numerical study on centrifugal stiffening effect for large rotating wind turbine blade based on NREL 5 MW and WindPACT 1.5 MW models," Renewable Energy, Elsevier, vol. 183(C), pages 321-329.
    7. Amna Algolfat & Weizhuo Wang & Alhussein Albarbar, 2022. "Study of Centrifugal Stiffening on the Free Vibrations and Dynamic Response of Offshore Wind Turbine Blades," Energies, MDPI, vol. 15(17), pages 1-19, August.
    8. Zhang, Dongqin & Liu, Zhenqing & Li, Weipeng & Hu, Gang, 2023. "LES simulation study of wind turbine aerodynamic characteristics with fluid-structure interaction analysis considering blade and tower flexibility," Energy, Elsevier, vol. 282(C).

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