Comprehensive review of the effect of flap technologies in H-Darrieus vertical axis wind turbines

Authors : Himmet Erdi Tanürün

Pages : 522-535

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Publication Date : 2025-08-25

Article Type : Review Paper

Abstract :This study presents a comprehensive analysis of the application and impact of flap technologies on the performance of Vertical Axis Wind Turbines (VAWTs). As a type of flow control device, flap technologies are proven to enhance aerodynamic performance by delaying flow separation, increasing lift, and reducing drag. Numerous experimental studies and numerical simulations demonstrate how flap technologies significantly improve the efficiency of VAWTs, especially at low wind speeds. Additionally, the role of flap technologies in extending the operational wind speed range and enhancing the self-starting capabilities of VAWTs is highlighted. This enhancement is crucial as it contributes to the viability of VAWTs in urban and suburban settings where wind conditions are highly variable. This study delves into the optimal positioning and arrangement of flap technologies on turbine blades to maximize performance enhancement. Thus, the paper offers a thorough exploration of VGs (Vortex Generators) as a key aerodynamic modification for boosting the performance of VAWTs and encourages continued research and optimization in this area. Further development and refinement of flap technologies could lead to their broader adoption in renewable energy systems, enhancing both the efficiency and sustainability of wind power generation.
Keywords : Rüzgâr enerjisi, Girdap jeneratörü, Dikey eksenli rüzgâr türbini (DERT), Pasif kontrol, Kanatçık teknolojileri

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