On the velocity at wind turbine  and propeller actuator discs

van Kuik, Gijs A. M.

doi:https://doi.org/10.5194/wes-5-855-2020

Articles | Volume 5, issue 3

https://doi.org/10.5194/wes-5-855-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/wes-5-855-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

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

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Final revised paper (published on 07 Jul 2020)
Preprint (discussion started on 28 Feb 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'fundamental aerodynamics of wind turbines', David Wood, 22 Mar 2020
RC2: 'Referees comment', Anonymous Referee #2, 28 Apr 2020
EC1: 'Please incorporate the Reviewers' comments', Alessandro Bianchini, 29 Apr 2020
AC1: 'reply to the reviewers RC1 and RC2', Gijs van Kuik, 19 May 2020
EC2: 'Revised paper', Alessandro Bianchini, 19 May 2020

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.