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Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
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Discussion papers
https://doi.org/10.5194/wes-2019-27
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-2019-27
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Submitted as: brief communications 28 May 2019

Submitted as: brief communications | 28 May 2019

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Wind Energy Science (WES).

Brief communication: Wind speed independent actuator disk control for faster AEP calculations of wind farms using CFD

Maarten Paul van der Laan1, Søren Juhl Andersen2, and Pierre-Elouan Réthoré1 Maarten Paul van der Laan et al.
  • 1Technical University of Denmark, DTU Wind Energy, Risø Campus, Frederiksborgvej 399, 4000 Roskilde, Denmark
  • 2Technical University of Denmark, DTU Wind Energy, Lyngby Campus, Anker Engelunds Vej 1, 2800 Lyngby, Denmark

Abstract. A simple wind speed independent actuator disk control method is proposed that can be applied to speed up annual energy production calculations of wind farms using Reynolds-averaged Navier–Stokes simulations. The new control method allows the user to simulate the effect of different wind speeds in one simulation by scaling a calibrated thrust coefficient curve, while keeping the inflow constant. Since the global flow is not changed, only the local flow around the actuator disks needs be recalculated from a previous converged result, which reduces the number of required iterations and computational effort by a factor of about 2–3.

Maarten Paul van der Laan et al.
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Status: final response (author comments only)
Status: final response (author comments only)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Maarten Paul van der Laan et al.
Maarten Paul van der Laan et al.
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Short summary
Wind farm layouts are designed by simple engineering wake models, which are fast to compute but also include a high uncertainty. Higher fidelity models, such as Reynolds-averaged Navier-Stokes, can be used to verify optimized wind farm layouts, although the computational cost are high due to the large number cases that are needed to calculate the annual energy production. This article presents a new wind turbine control method to speed up the high fidelity simulations by a factor 2–3.
Wind farm layouts are designed by simple engineering wake models, which are fast to compute but...
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