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Design of a boundary-layer suction system for turbulent trailing-edge noise reduction of wind turbines

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  • Arnold, B.
  • Lutz, Th.
  • Krämer, E.

Abstract

The present work introduces a method for the design of a boundary-layer suction system for turbulent trailing-edge noise reduction of wind turbines. Since the latter hitherto has been primarily assessed in a two-dimensional framework, the paper is meant to point out whether the predicted improvements carry over to wind turbine flow. Since the processes of trailing-edge noise reduction and effective power alteration are intimately bound together, great emphasis is put on an accurate prediction of pump power requirement, the latter being based on a detailed suction hardware system implying pressure losses across each component. An exemplarily performed design reveals that, within a certain design regime, trailing-edge noise reduction is accompanied by an enhancement of rotor power. However, as of a distinct cross-over point at which the pump power requirement exactly compensates the amelioration of aerodynamic power, a trade-off between aeroacoustics and aerodynamics arises. The method bases on fully-resolved URANS computations and is applied to the generic NREL 5 MW turbine.

Suggested Citation

  • Arnold, B. & Lutz, Th. & Krämer, E., 2018. "Design of a boundary-layer suction system for turbulent trailing-edge noise reduction of wind turbines," Renewable Energy, Elsevier, vol. 123(C), pages 249-262.
    • Handle: RePEc:eee:renene:v:123:y:2018:i:c:p:249-262
    DOI: 10.1016/j.renene.2018.02.050
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    Cited by:

    1. Mohammad Souri & Farshad Moradi Kashkooli & Madjid Soltani & Kaamran Raahemifar, 2021. "Effect of Upstream Side Flow of Wind Turbine on Aerodynamic Noise: Simulation Using Open-Loop Vibration in the Rod in Rod-Airfoil Configuration," Energies, MDPI, vol. 14(4), pages 1-24, February.
    2. Wang, Peilin & Liu, Qingsong & Li, Chun & Miao, Weipao & Yue, Minnan & Xu, Zifei, 2022. "Investigation of the aerodynamic characteristics of horizontal axis wind turbine using an active flow control method via boundary layer suction," Renewable Energy, Elsevier, vol. 198(C), pages 1032-1048.
    3. Md Zishan Akhter & Farag Khalifa Omar, 2021. "Review of Flow-Control Devices for Wind-Turbine Performance Enhancement," Energies, MDPI, vol. 14(5), pages 1-35, February.
    4. Moussavi, S. Abolfazl & Ghaznavi, Aidin, 2021. "Effect of boundary layer suction on performance of a 2 MW wind turbine," Energy, Elsevier, vol. 232(C).

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