Wind Energy Science
Wind Energy Science
WES
Articles | Volume 3, issue 2
Articles | Volume 3, issue 2
https://doi.org/10.5194/wes-3-545-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-3-545-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 3, issue 2
Research article
 | 
22 Aug 2018
Research article |  | 22 Aug 2018

Dynamic inflow effects in measurements and high-fidelity computations

Georg Raimund Pirrung and Helge Aagaard Madsen

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Short summary
A wind turbine sees an overshoot in loading after a step change in pitch angle because the wake takes some time to reach a new equilibrium. The time constants of this dynamic inflow effect are expected to decrease significantly towards the blade tip. This radial dependency has not been found to the expected extent in previous analyses of force measurements from the NASA Ames Phase VI experiment. In the present article the findings from the experiment are explained based on a simple vortex model.
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