Preprints
https://doi.org/10.5194/wes-2021-140
https://doi.org/10.5194/wes-2021-140

  08 Dec 2021

08 Dec 2021

Review status: this preprint is currently under review for the journal WES.

High Reynolds number wind turbine blade equipped with root spoilers. Part I: Unsteady aerodynamic analysis using URANS simulations

Thomas Potentier1,3, Emmanuel Guilmineau1, Arthur Finez2, Colin Le Bourdat3, and Caroline Braud1 Thomas Potentier et al.
  • 1LHEEA, 1 rue de la Noë 44321 Nantes Cedex 3 - FRANCE
  • 2ENGIE Green, 59 Rue Denuzière 69002 Lyon - FRANCE
  • 3ENGIE Green, 15 rue Nina Simone 44000 Nantes - FRANCE

Abstract. A wind turbine blade equipped with root spoilers is analysed using 2D Computational Fluid Dynamics (CFD) to assess the unsteady impact of passive devices. Several metrics such as lift and drag coefficients, pressure and instantaneous velocity field around the aerofoil, Power Spectral Density and Strouhal number are used in the 2D unsteady analysis. The spoiler is found to efficiently rearrange the flow, adding lift throughout the positive angles of attack. However, the drawback is a high drag penalty coupled with high unsteadiness of the aerodynamic forces.

Thomas Potentier et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2021-140', Anonymous Referee #1, 06 Jan 2022
  • RC2: 'Comment on wes-2021-140', Anonymous Referee #2, 22 Jan 2022

Thomas Potentier et al.

Thomas Potentier et al.

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Short summary
The spoiler is found to efficiently rearrange the mean flow seen by thick aerofoil: adding lift throughout the positive angles of attack, the drawback is a high drag penalty coupled with high unsteadiness of the aerodynamic forces. The impact of this type of excitation will be quantified further in term of energy production and fatigue in future work.