Preprints
https://doi.org/10.5194/wes-2024-11
https://doi.org/10.5194/wes-2024-11
29 Jan 2024
 | 29 Jan 2024
Status: a revised version of this preprint is currently under review for the journal WES.

Experimental analysis of a horizontal axis wind turbine with swept blades using PIV data

Erik Fritz, Koen Boorsma, and Carlos Ferreira

Abstract. This study presents findings from a wind tunnel experiment investigating a model wind turbine equipped with aft-swept blades. Utilising Particle Image Velocimetry, velocity fields were measured at multiple radial stations. These allow the derivation of blade-level aerodynamic parameters, including bound circulation, induction values, inflow angle, angle of attack, and forces normal and tangential to the rotor plane. The measured local lift coefficient aligns well with the lift polar of the design airfoil, validating the experimental approach.

The resulting public dataset provides a comprehensive aerodynamic characterisation of rotating swept blades in controlled conditions. It can serve as a baseline for future experimental research on swept wind turbine blades. Furthermore, it is valuable in validating numerical models of varying fidelity simulating swept wind turbine blades. The provided blade-level aerodynamics are particularly relevant to lower fidelity models such as blade element momentum theory and lifting line algorithms. At the same time, the measured flow fields can be compared against higher fidelity simulation results from computational fluid dynamics.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Erik Fritz, Koen Boorsma, and Carlos Ferreira

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on wes-2024-11', Alessandro Fontanella, 25 Feb 2024
    • AC1: 'Comment on wes-2024-11', Erik Fritz, 12 Jun 2024
  • RC2: 'Comment on wes-2024-11', Anonymous Referee #2, 17 Apr 2024
    • AC1: 'Comment on wes-2024-11', Erik Fritz, 12 Jun 2024
  • AC1: 'Comment on wes-2024-11', Erik Fritz, 12 Jun 2024
Erik Fritz, Koen Boorsma, and Carlos Ferreira

Data sets

Supporting data belonging to the publication Experimental analysis of a horizontal axis wind turbine with swept blades using PIV data Erik Fritz, Koen Boorsma, and Carlos Ferreira https://doi.org/10.4121/c9631f69-8855-4e2d-8777-38338534b4ea

Erik Fritz, Koen Boorsma, and Carlos Ferreira

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Short summary
This study presents results from a wind tunnel experiment on a model wind turbine with swept blades, thus, blades curved in the rotor plane. Using a non-intrusive measurement technique, the flow around the turbine blades was measured from which blade-level aerodynamics are derived in post-processing. The detailed experimental database gives insight into swept blade aerodynamics and has great value in validating numerical tools, which aim at simulating swept wind turbine blades.
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