Articles | Volume 11, issue 4
https://doi.org/10.5194/wes-11-1383-2026
https://doi.org/10.5194/wes-11-1383-2026
Data description article
 | 
24 Apr 2026
Data description article |  | 24 Apr 2026

New method to characterize aerodynamic flow state around wind turbine blades

Dimitri Voisin, Didier Velayoudon, Mattéo Capaldo, John-Richard Ordonnez-Valera, Rachel Jorand, and Mohammed Fajar

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Cited articles

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Bartholomay, S., Michos, G., Perez-Becker, S., Pechlivanoglou, G., Nayeri, C., Nikolaouk, G., and Paschereit, C. O.: Towards Active Flow Control on a Research Scale Wind Turbine Using PID controlled Trailing Edge Flaps, Wind Energy Symposium, American Institute of Aeronautics and Astronautics, Inc., https://doi.org/10.2514/6.2018-1245, 2018. 
Chamorro, L. P., Guala, M., Arndt, R. E. A., and Sotiropoulos, F.: On the evolution of turbulent scales in the wake of a wind turbine model, J. Turbul., 13, 1–13, https://doi.org/10.1080/14685248.2012.697169, 2012. 
Coquelet, M., Lejeune, M., Bricteux, L., van Vondelen, A. A. W., van Wingerden, J.-W., and Chatelain, P.: On the robustness of a blade-load-based wind speed estimator to dynamic pitch control strategies, Wind Energ. Sci., 9, 1923–1940, https://doi.org/10.5194/wes-9-1923-2024, 2024. 
Creaby, J., Li, Y., and Seem, J. E.: Maximizing Wind Turbine Energy Capture Using Multivariable Extremum Seeking Control, Wind Eng., 33, 361–387, https://doi.org/10.1260/030952409789685753, 2009. 
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Short summary
This study presents a novel method to characterize the aerodynamic flow state on wind turbine blades using eTellTale (eTT) sensors. Deployed on two Vestas V27 turbines, the sensors show that attached flow increases energy production by 15 %, while detached flow reduces it by 30 %. Results indicate that 15 % of potential power is lost during 33 % of operating time, highlighting opportunities for improved real-time turbine control.
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