Wind tunnel tests of a free yawing downwind wind turbine

David Robert Verelst, Torben J. Larsen, J.W. van Wingerden

Research output: Contribution to conferencePosterResearchpeer-review

412 Downloads (Pure)


During February and April 2012 a series of wind tunnel tests were performed at the TU Delft Open Jet Facility (OJF) with a three bladed downwind wind turbine and a rotor radius of 0.8 meters. The setup includes an off the shelf three bladed hub, nacelle and generator on which relatively flexible blades are mounted. The tower support structure has free yawing capabilities provided at the tower base. A short overview on the technical details of the experiment is provided as well as a brief summary of the design process. The discussed test cases show that the turbine is stable while operating in free yawing
conditions. Further, the effect of the tower shadow passage on the blade flapwise strain measurement is evaluated. Finally, data from the experiment is compared with preliminary simulations using DTU Wind Energy's aeroelastic simulation program HAWC2.
Original languageEnglish
Publication date2012
Number of pages1
Publication statusPublished - 2012
EventThe science of Making Torque from Wind 2012: 4th scientific conference - Universität Oldenburg, Oldenburg, Germany
Duration: 9 Oct 201211 Oct 2012


ConferenceThe science of Making Torque from Wind 2012
LocationUniversität Oldenburg
Internet address

Bibliographical note

This research is partly funded by EU 7th Framework Marie Curie IAPP grant no. 230698 WINDFLOWER and NWO Veni Grant no. 11930 Reconfigurable Floating Wind Farms


Dive into the research topics of 'Wind tunnel tests of a free yawing downwind wind turbine'. Together they form a unique fingerprint.

Cite this