Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis
Darrieus vertical axis wind turbines (VAWTs) have limited self-starting torque, especially in urban areas with low and changing wind speeds. This study modifies NACA 0015 aerofoils with Plain Flaps (PF) and Gurney Flaps (GF) to improve aerodynamic performance for urban solar wind tree systems. The k...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024016529 |
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| author | Wallaaldin Abass Eltayeb Jarupula Somlal |
| author_facet | Wallaaldin Abass Eltayeb Jarupula Somlal |
| author_sort | Wallaaldin Abass Eltayeb |
| collection | DOAJ |
| description | Darrieus vertical axis wind turbines (VAWTs) have limited self-starting torque, especially in urban areas with low and changing wind speeds. This study modifies NACA 0015 aerofoils with Plain Flaps (PF) and Gurney Flaps (GF) to improve aerodynamic performance for urban solar wind tree systems. The k-omega Shear Stress Transport (SST) URANS model was used to simulate different configurations at varied Tip Speed Ratios (TSRs). The 0.6c, 10° PF configuration achieved the highest power coefficient (Cp) of 0.46 at TSR 2.5, a 9.8 % increase over the baseline NACA 0015. Additionally, PFs reduced negative torque and achieved the highest peak average torque across configurations, significantly boosting self-starting capability and torque consistency under low Reynolds number (Re) conditions. GF configurations, especially the 0.25c, 120° GF, provided stable torque generation, enhancing performance under variable wind conditions. These findings indicate that optimizing VAWTs for urban use requires balancing peak efficiency with torque stability. Future work should focus on adaptive flap designs capable of real-time optimization, alongside experimental validation. |
| format | Article |
| id | doaj-art-4e52b83ce41e4da3a4dd17f2d8ab9f6e |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-4e52b83ce41e4da3a4dd17f2d8ab9f6e2024-12-19T10:59:17ZengElsevierResults in Engineering2590-12302024-12-0124103400Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysisWallaaldin Abass Eltayeb0Jarupula Somlal1Corresponding author at: Koneru Lakshmaiah Education Foundation, Guntur, Andhra Pradesh India.; Department of Electrical and Electronics Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, Andhra Pradesh, 522502, IndiaDepartment of Electrical and Electronics Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, Guntur, Andhra Pradesh, 522502, IndiaDarrieus vertical axis wind turbines (VAWTs) have limited self-starting torque, especially in urban areas with low and changing wind speeds. This study modifies NACA 0015 aerofoils with Plain Flaps (PF) and Gurney Flaps (GF) to improve aerodynamic performance for urban solar wind tree systems. The k-omega Shear Stress Transport (SST) URANS model was used to simulate different configurations at varied Tip Speed Ratios (TSRs). The 0.6c, 10° PF configuration achieved the highest power coefficient (Cp) of 0.46 at TSR 2.5, a 9.8 % increase over the baseline NACA 0015. Additionally, PFs reduced negative torque and achieved the highest peak average torque across configurations, significantly boosting self-starting capability and torque consistency under low Reynolds number (Re) conditions. GF configurations, especially the 0.25c, 120° GF, provided stable torque generation, enhancing performance under variable wind conditions. These findings indicate that optimizing VAWTs for urban use requires balancing peak efficiency with torque stability. Future work should focus on adaptive flap designs capable of real-time optimization, alongside experimental validation.http://www.sciencedirect.com/science/article/pii/S2590123024016529Darrieus wind turbineComputational Fluid Dynamics (CFD)Plain FlapGurney flapSelf-starting capability |
| spellingShingle | Wallaaldin Abass Eltayeb Jarupula Somlal Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis Results in Engineering Darrieus wind turbine Computational Fluid Dynamics (CFD) Plain Flap Gurney flap Self-starting capability |
| title | Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis |
| title_full | Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis |
| title_fullStr | Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis |
| title_full_unstemmed | Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis |
| title_short | Performance enhancement of Darrieus wind turbines using Plain Flap and Gurney Flap configurations: A CFD analysis |
| title_sort | performance enhancement of darrieus wind turbines using plain flap and gurney flap configurations a cfd analysis |
| topic | Darrieus wind turbine Computational Fluid Dynamics (CFD) Plain Flap Gurney flap Self-starting capability |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024016529 |
| work_keys_str_mv | AT wallaaldinabasseltayeb performanceenhancementofdarrieuswindturbinesusingplainflapandgurneyflapconfigurationsacfdanalysis AT jarupulasomlal performanceenhancementofdarrieuswindturbinesusingplainflapandgurneyflapconfigurationsacfdanalysis |