Articles | Volume 5, issue 3
Research article
07 Jul 2020
Research article |  | 07 Jul 2020

On the velocity at wind turbine and propeller actuator discs

Gijs A. M. van Kuik


Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Gijs van Kuik on behalf of the Authors (02 Jun 2020)  Author's response   Manuscript 
ED: Publish as is (02 Jun 2020) by Alessandro Bianchini
ED: Publish as is (02 Jun 2020) by Joachim Peinke (Chief editor)
AR by Gijs van Kuik on behalf of the Authors (09 Jun 2020)
Short summary
The paper compares actuator discs in propeller and wind turbine mode. At very low rotational speed, propeller discs have an expanding wake while still energy is put into the wake. The velocity at the disc in the plane containing the axis is practically uniform: a few per mille deviation for wind turbine discs and a few per cent for propeller discs. The deviations are caused by the different strengths of the singularity in the wake boundary vorticity strength at its leading edge.
Final-revised paper