Articles | Volume 11, issue 6
https://doi.org/10.5194/wes-11-2037-2026
© 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-11-2037-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Jun 2026
Research article |
| 10 Jun 2026
| 10 Jun 2026
Experimental validation and extension of a blade element momentum model for counter-rotation dual-rotor wind turbine with double rotational armature design
Niels Cornelis Adema
CORRESPONDING AUTHOR
Entrance – Centre of Expertise Energy part of Hanze UAS, Groningen, 9747AA, the Netherlands
Josep Gil-Vernet Pagonabarraga
Entrance – Centre of Expertise Energy part of Hanze UAS, Groningen, 9747AA, the Netherlands
Institute of Engineering, section Mechanical Engineering, Hanze UAS, Groningen, 9747AS, the Netherlands
Wouter Swart Ranshuysen
Institute of Engineering, section Mechanical Engineering, Hanze UAS, Groningen, 9747AS, the Netherlands
Arjen de Ruijter
Institute of Engineering, section Mechanical Engineering, Hanze UAS, Groningen, 9747AS, the Netherlands
Gerard Schepers
Entrance – Centre of Expertise Energy part of Hanze UAS, Groningen, 9747AA, the Netherlands
TNO Energy Transition and Materials, 2628 CK, Delft, the Netherlands
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Short summary
Small wind turbines could help to generate renewable energy but are often inefficient and expensive. This study tested a counter-rotating dual-rotor design with both rotors connected through one generator, eliminating gearboxes. Wind tunnel tests achieved a 1 kW output with 33 % efficiency. A computational model showed that the turbine could theoretically reach 56 % efficiency with optimized blade angles. This compact design reduces mechanical complexity and suits urban applications.
Small wind turbines could help to generate renewable energy but are often inefficient and...
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