Articles | Volume 5, issue 2
Wind Energ. Sci., 5, 759–773, 2020
https://doi.org/10.5194/wes-5-759-2020

Special issue: Wind Energy Science Conference 2019

Wind Energ. Sci., 5, 759–773, 2020
https://doi.org/10.5194/wes-5-759-2020

Research article 18 Jun 2020

Research article | 18 Jun 2020

First characterization of a new perturbation system for gust generation: the chopper

Ingrid Neunaber and Caroline Braud

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AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Anna Wenzel on behalf of the Authors (01 Apr 2020)  Author's response
ED: Publish subject to technical corrections (04 May 2020) by Katherine Dykes
ED: Publish subject to technical corrections (10 May 2020) by Joachim Peinke(Chief Editor)
AR by Ingrid Neunaber on behalf of the Authors (19 May 2020)  Author's response    Manuscript
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Short summary
Motivated by the need for wind turbine rotor blade tests in flows with atmospheric-like properties like gusts, we present a new setup to generate strong, rapid, turbulent gusts in a wind tunnel. The setup consists of a rotating bar that cuts through the inlet of the wind tunnel which generates the gust, and it is called the chopper. In this work, the flow generated by the chopper is characterized, and we show how the gust and its turbulence evolve downstream.