Effect of Deformable Gurney Flaps on the Output Power of Flapping Turbine
The Gurney flap (GF) is a simple flat plate frequently mounted at the airfoil rear. Several investigations have been devoted to studying the effect of a rigid or even movable GF on the aerodynamic behavior of several devices such as flapping airfoils and vertical or horizontal axis turbines. The pre...
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MDPI AG
2025-04-01
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| Series: | Fluids |
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| Online Access: | https://www.mdpi.com/2311-5521/10/4/104 |
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| author | Chebana Abdelbasset Ghelani Laala Mohamed Taher Bouzaher Charaf Eddine Bensaci Alaeddine Zereg Nadhir Lebaal Mounir Aksas |
| author_facet | Chebana Abdelbasset Ghelani Laala Mohamed Taher Bouzaher Charaf Eddine Bensaci Alaeddine Zereg Nadhir Lebaal Mounir Aksas |
| author_sort | Chebana Abdelbasset |
| collection | DOAJ |
| description | The Gurney flap (GF) is a simple flat plate frequently mounted at the airfoil rear. Several investigations have been devoted to studying the effect of a rigid or even movable GF on the aerodynamic behavior of several devices such as flapping airfoils and vertical or horizontal axis turbines. The present paper proposes a new concept of a deformable Gurney flap (DGF) to improve the output power of a flapping airfoil in vertical mode. The advantage of this model is the full control of the effect on the GF during the flapping movement. The DGF is expandable and contractible which allows for monitoring and adjusting the pressure distribution at the appropriate time and position. By using a 2D transient simulation with a specific dynamic mesh design, an extended numerical analysis has been provided. It was found that this model is able to increase the output power by 19.5%. Furthermore, the concept of the DGF is applied on flapping turbines in hybrid modes such as swing arm mode and D-shaped mode. These modes are investigated to clarify the studied model’s advantage and to demonstrate the possibility of applying this strategy to control the different flapping movements. |
| format | Article |
| id | doaj-art-cbd46d10f3e746edbb12f0615ce1ffa1 |
| institution | DOAJ |
| issn | 2311-5521 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj-art-cbd46d10f3e746edbb12f0615ce1ffa12025-08-20T03:13:47ZengMDPI AGFluids2311-55212025-04-0110410410.3390/fluids10040104Effect of Deformable Gurney Flaps on the Output Power of Flapping TurbineChebana Abdelbasset0Ghelani Laala1Mohamed Taher Bouzaher2Charaf Eddine Bensaci3Alaeddine Zereg4Nadhir Lebaal5Mounir Aksas6Laboratory of Engineering and Science of Advanced Materials (ISMA), University Abbes Laghrour, Khenchela 40004, AlgeriaLaboratory of Engineering and Science of Advanced Materials (ISMA), University Abbes Laghrour, Khenchela 40004, AlgeriaScientific and Technical Research Centre for Arid Areas (CRSTRA), Biskra 07000, AlgeriaLaboratory of Fundamental and Applied Sciences, Ecole National Polytechnique (ENP), Algiers 01600, AlgeriaLaboratoire de Physique Energétique Appliquée (LPEA), University of Batna 1, Batna 05000, AlgeriaUniversité Marie et Louis Pasteur, UTBM, CNRS, Laboratoire Interdisciplinaire Carnot de Bourgogne ICB UMR 6303, 90010 Belfort, FranceRenewable Energy, Energy Efficiency and Smart Systems (LEREESI) Laboratory, Higher National School of Renewable Energies, Environment & Sustainable Development (HNS-RE2SD), Batna 05078, AlgeriaThe Gurney flap (GF) is a simple flat plate frequently mounted at the airfoil rear. Several investigations have been devoted to studying the effect of a rigid or even movable GF on the aerodynamic behavior of several devices such as flapping airfoils and vertical or horizontal axis turbines. The present paper proposes a new concept of a deformable Gurney flap (DGF) to improve the output power of a flapping airfoil in vertical mode. The advantage of this model is the full control of the effect on the GF during the flapping movement. The DGF is expandable and contractible which allows for monitoring and adjusting the pressure distribution at the appropriate time and position. By using a 2D transient simulation with a specific dynamic mesh design, an extended numerical analysis has been provided. It was found that this model is able to increase the output power by 19.5%. Furthermore, the concept of the DGF is applied on flapping turbines in hybrid modes such as swing arm mode and D-shaped mode. These modes are investigated to clarify the studied model’s advantage and to demonstrate the possibility of applying this strategy to control the different flapping movements.https://www.mdpi.com/2311-5521/10/4/104energy harvestingflapping airfoilsdeformable Gurney flaptransient simulation |
| spellingShingle | Chebana Abdelbasset Ghelani Laala Mohamed Taher Bouzaher Charaf Eddine Bensaci Alaeddine Zereg Nadhir Lebaal Mounir Aksas Effect of Deformable Gurney Flaps on the Output Power of Flapping Turbine Fluids energy harvesting flapping airfoils deformable Gurney flap transient simulation |
| title | Effect of Deformable Gurney Flaps on the Output Power of Flapping Turbine |
| title_full | Effect of Deformable Gurney Flaps on the Output Power of Flapping Turbine |
| title_fullStr | Effect of Deformable Gurney Flaps on the Output Power of Flapping Turbine |
| title_full_unstemmed | Effect of Deformable Gurney Flaps on the Output Power of Flapping Turbine |
| title_short | Effect of Deformable Gurney Flaps on the Output Power of Flapping Turbine |
| title_sort | effect of deformable gurney flaps on the output power of flapping turbine |
| topic | energy harvesting flapping airfoils deformable Gurney flap transient simulation |
| url | https://www.mdpi.com/2311-5521/10/4/104 |
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