Wind Energy Science
Wind Energy Science
WES
Articles | Volume 6, issue 5
Articles | Volume 6, issue 5
https://doi.org/10.5194/wes-6-1227-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-6-1227-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 6, issue 5
Research article
 | 
16 Sep 2021
Research article |  | 16 Sep 2021

Statistical impact of wind-speed ramp events on turbines, via observations and coupled fluid-dynamic and aeroelastic simulations

Mark Kelly, Søren Juhl Andersen, and Ásta Hannesdóttir

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Latest update: 26 Sep 2023
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Short summary
Via 11 years of measurements, we made a representative ensemble of wind ramps in terms of acceleration, mean speed, and shear. Constrained turbulence and large-eddy simulations were coupled to an aeroelastic model for each ensemble member. Ramp acceleration was found to dominate the maxima of thrust-associated loads, with a ramp-induced increase of 45 %–50 % plus ~ 3 % per 0.1 m/s2 of bulk ramp acceleration magnitude. The LES indicates that the ramps (and such loads) persist through the farm.
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