Preprints
https://doi.org/10.5194/wes-2021-4
https://doi.org/10.5194/wes-2021-4

  17 May 2021

17 May 2021

Review status: a revised version of this preprint is currently under review for the journal WES.

High Reynolds investigations on the ability of the full scale e-TellTale sensor to detect flow separation on a wind turbine blade section

Antoine Soulier1,2, Caroline Braud2, Dimitri Voisin1, and Danbon Frédéric3 Antoine Soulier et al.
  • 1Mer Agitée, Port-la-Forêt, 29940 La Forêt-Fouesnant
  • 2LHEEA lab. (CNRS/Centrale Nantes), 1, rue de la Noë, 44321 Nantes
  • 3CSTB, 11 Rue Henri Picherit, 44300 Nantes

Abstract. The complexity of the flow over a wind turbine blade makes its understanding and monitoring a challenging task, especially on operating wind turbines. The innovative e-Telltale sensor is developed for that purpose : detecting the flow separation on wind turbines blades. In this paper, high Reynolds wind tunnel tests have been performed with different configurations of full scale e-Telltale sensors and wall pressure measurements on a wind turbine blade section. A comparison between the lift curve and the e-Telltale signal was used to evaluate the ability of the sensor to detect flow separation. Results show different interesting properties of the sensor response depending on its size, position along the chord and its fitting process that could be used in real applications.

Antoine Soulier 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-2021-4', Anonymous Referee #1, 26 Jun 2021
    • RC3: 'Reply on RC1', Anonymous Referee #1, 07 Jul 2021
    • AC1: 'Reply on RC1', Caroline Braud, 23 Aug 2021
  • RC2: 'Comment on wes-2021-4', Anonymous Referee #2, 04 Jul 2021
    • AC2: 'Reply on reviewer #2', Caroline Braud, 23 Aug 2021

Antoine Soulier et al.

Antoine Soulier et al.

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Short summary
The e-Telltale, a new aerodynamic sensor have been tested in a large wind tunnel in the CSTB. This sensor have been designed to detect the flow separation on wind turbine blades which can cause energy production losses and increased aging of the blades. Theses wind tunnel tests higlighted the good ability of the e-Telltale to detect the flow separation and the influence of the size and location of the e-Telltale on the flow separation detection.