Open access wind tunnel measurements of a downwind free yawing wind turbine

David Robert Verelst, Torben J. Larsen, Jan-Willem van Wingerden

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A series of free yawing wind tunnel experiments was held in the Open Jet Facility (OJF) of the TU Delft. The ≈ 300 W turbine has three blades in a downwind configuration and is optionally free to yaw. Different 1.6m diameter rotor configurations are tested such as blade flexibility and sweep. This paper gives a brief overview of the measurement setup and challenges, and continues with presenting some key results. This wind tunnel campaign has shown that a three bladed downwind wind turbine can operate in a stable fashion under a minimal yaw error. Finally, a description of how to obtain this open access dataset, including the post-processing scripts and procedures, is made available via a publicly accessible website.
Original languageEnglish
Article number072013
Book seriesJournal of Physics: Conference Series (Online)
Number of pages12
Publication statusPublished - 2016
EventThe Science of Making Torque from Wind 2016 - Technische Universität München (TUM), Munich, Germany
Duration: 5 Oct 20167 Oct 2016
Conference number: 6


ConferenceThe Science of Making Torque from Wind 2016
LocationTechnische Universität München (TUM)
Internet address

Bibliographical note

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
Published under licence by IOP Publishing Ltd


  • Applied fluid mechanics
  • Jets in fluid dynamics
  • Power and plant engineering (mechanical engineering)
  • Mechanical components
  • Measurement
  • Fluid mechanics and aerodynamics (mechanical engineering)
  • blades
  • jets
  • mechanical variables measurement
  • rotors (mechanical)
  • wind tunnels
  • wind turbines
  • open access wind tunnel measurements
  • downwind free yawing wind turbine
  • Open Jet Facility
  • OJF
  • TU Delft
  • downwind configuration
  • rotor configurations
  • three bladed downwind wind turbine
  • minimal yaw error


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