Articles | Volume 7, issue 3
Wind Energ. Sci., 7, 943–965, 2022
Wind Energ. Sci., 7, 943–965, 2022
Research article
03 May 2022
Research article | 03 May 2022

Experimental investigation of mini Gurney flaps in combination with vortex generators for improved wind turbine blade performance

Jörg Alber et al.

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Cited articles

Abbott, I. H. and von Doenhoff, A. E.: Theory of Wing Sections, Dover publications, Inc., New York, ISBN 100486605868, 1959. 
Alber, J., Pechlivanoglou, G., Paschereit, C. O., Twele, J., and Weinzierl, G.: Parametric Investigation of Gurney Flaps for the Use on Wind Turbine Blades, in: Proceedings of the ASME Turbo Expo 2017, Volume 9, Wind Energy, June 2017, Charlotte, North Carolina, USA, Paper GT2017-64475,, 2017.  
am Brink, B. K.: Trailing edge wedge for an aircraft wing, United States Patent, Patent Number: US 6,382,561 B1, 7 May 2002. 
Bach, A. B., Lennie, M., Pechlivanoglou, G., Nayeri, C. N., and Paschereit, C. O.: Finite micro-tab system for load control on a wind turbine, J. Phys.: Conf. Ser., 524, 012082,, 2014. 
Bak, C., Zahle, F., Bitsche, R., Kim, T., Yde, A., Henriksen, L. C., Natarajan, A., and Hansen, M.: Description of the DTU 10 MW Reference Wind Turbine, DTU Wind Energy Report-I-0092, Technical University of Denmark, DTU, June 2013. 
Short summary
This paper investigates the potentials and the limitations of mini Gurney flaps and their combination with vortex generators for improved rotor blade performance of wind turbines. These small passive add-ons are installed in order to increase the annual energy production by mitigating the effects of both early separation toward the root region and surface erosion toward the tip region of the blade. As such, this study contributes to the reliable and long-term generation of renewable energy.