Articles | Volume 11, issue 9
https://doi.org/10.5194/wes-11-3337-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-11-3337-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
07 Sep 2026
Research article |
| 07 Sep 2026
| 07 Sep 2026
Detailed experimental investigation of the aerodynamics and blade/tower interaction of a 1.5 MW wind turbine in a downwind configuration
Technical University of Denmark, Department of Wind and Energy Systems, 4000 Roskilde, Denmark
Pietro Bortolotti
National Laboratory of the Rockies, 15013 Denver West Parkway, Golden, CO 80401, USA
Thanasis Barlas
Technical University of Denmark, Department of Wind and Energy Systems, 4000 Roskilde, Denmark
Pourya Nikoueeyan
Resono Pressure Systems, 1938 Harney St, Laramie, WY 82072, USA
Christopher Kelley
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM, 87185, USA
Claus Brian Munk Pedersen
Technical University of Denmark, Department of Wind and Energy Systems, 4000 Roskilde, Denmark
Per Hansen
Technical University of Denmark, Department of Wind and Energy Systems, 4000 Roskilde, Denmark
Andreas Fischer
Technical University of Denmark, Department of Wind and Energy Systems, 4000 Roskilde, Denmark
Chris Ivanov
National Laboratory of the Rockies, 15013 Denver West Parkway, Golden, CO 80401, USA
Jason Roadman
National Laboratory of the Rockies, 15013 Denver West Parkway, Golden, CO 80401, USA
Jonathan Naughton
Resono Pressure Systems, 1938 Harney St, Laramie, WY 82072, USA
University of Wyoming, 1000 E. University Ave., Laramie, WY 82071, USA
Kenneth Brown
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM, 87185, USA
Mark Iverson
National Laboratory of the Rockies, 15013 Denver West Parkway, Golden, CO 80401, USA
Simon Thao
National Laboratory of the Rockies, 15013 Denver West Parkway, Golden, CO 80401, USA
Video supplement
downwind-turbine-pressure-variations-blade-tower H. A. Madsen and A. Barlas https://doi.org/10.5281/zenodo.22230718
Short summary
We present a detailed experimental investigation of the flow details of the blade/tower interaction (BTI) on a 1.5 MW wind turbine operating in a downwind configuration. The objective is to clarify some of the most important barriers for the downwind turbine concept linked to the impulsive loading from the blade/tower interaction generating low-frequency noise and increased loading. Unique instrumentation was used, comprising two extruded pressure belts on one of the blades and on the tower.
We present a detailed experimental investigation of the flow details of the blade/tower...
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