Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system
The energy extraction from urban wind at small-to-medium scale is limited due to lower performance and high capital cost of wind energy systems. This study aims to optimize the passive yaw control mechanism of a motionless wind energy system utilizing opposing S1210 airfoils, focusing on enhancing a...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-07-01
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| Series: | Energy Conversion and Management: X |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590174525003393 |
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| author | Umair Munir S.M.A. Naqvi Yousra Filali Baba Patrick Hays Rice Uzair Sajjad Gwi Hyun Lee Muhammad Imtiaz Hussain |
| author_facet | Umair Munir S.M.A. Naqvi Yousra Filali Baba Patrick Hays Rice Uzair Sajjad Gwi Hyun Lee Muhammad Imtiaz Hussain |
| author_sort | Umair Munir |
| collection | DOAJ |
| description | The energy extraction from urban wind at small-to-medium scale is limited due to lower performance and high capital cost of wind energy systems. This study aims to optimize the passive yaw control mechanism of a motionless wind energy system utilizing opposing S1210 airfoils, focusing on enhancing alignment with variable wind directions. A computational fluid dynamics (CFD) framework evaluates five tail vane designs NACA0012, triangular, trapezoidal, arrow, and rounded to assess their aerodynamic performance in generating lift, minimizing drag, and producing turning moments for self-alignment. Results demonstrate that the NACA0012 airfoil-shaped vane achieves superior efficiency, balancing high lift (15 % greater than alternatives) and low drag, enabling robust turbine orientation even at wind speeds of 8 m/s. However, off-axis wind angles exceeding 15° degrade performance drastically, reducing the coefficient of performance (COP) by 26 % and 81 % at 20° and 25°, respectively, highlighting the importance of passive yaw control. The findings contribute to optimizing the paired airfoil wind energy system for improved performance in urban wind conditions. The study concludes that integrating streamlined tail vanes, such as the NACA0012, significantly enhances the viability of motionless wind turbines for urban deployment, offering a cost-effective solution to harness low-to-medium wind speeds with minimal maintenance. |
| format | Article |
| id | doaj-art-75af15b9723645db85fde84a5db578aa |
| institution | Kabale University |
| issn | 2590-1745 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Energy Conversion and Management: X |
| spelling | doaj-art-75af15b9723645db85fde84a5db578aa2025-08-23T04:49:05ZengElsevierEnergy Conversion and Management: X2590-17452025-07-012710120710.1016/j.ecmx.2025.101207Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy systemUmair Munir0S.M.A. Naqvi1Yousra Filali Baba2Patrick Hays Rice3Uzair Sajjad4Gwi Hyun Lee5Muhammad Imtiaz Hussain6Mechanical Engineering Department, NFC-IEFR, Faisalabad 38090, PakistanDepartment of Energy and Power Engineering, School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China; Zhengzhou Research Institute, Beijing Institute of Technology, Zhengzhou 450000, ChinaDepartment of Energy and Environment, Energy Research Center, Ecole Nationale Supérieure des Arts et Métiers (ENSAM-R), Mohammed V University, B.P 6207 Rabat, MoroccoOffice of Science & Research, The College of the Florida Keys, 5901 College Rd., Key West, FL 33040, United States of AmericaInterdisciplinary Research Center for Sustainable Energy Systems (IRC-SES), King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia; Corresponding authors.Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, South KoreaDepartment of Engineering & Technology, The College of the Florida Keys, 5901 College Rd., Key West, FL 33040, United States of America; Corresponding authors.The energy extraction from urban wind at small-to-medium scale is limited due to lower performance and high capital cost of wind energy systems. This study aims to optimize the passive yaw control mechanism of a motionless wind energy system utilizing opposing S1210 airfoils, focusing on enhancing alignment with variable wind directions. A computational fluid dynamics (CFD) framework evaluates five tail vane designs NACA0012, triangular, trapezoidal, arrow, and rounded to assess their aerodynamic performance in generating lift, minimizing drag, and producing turning moments for self-alignment. Results demonstrate that the NACA0012 airfoil-shaped vane achieves superior efficiency, balancing high lift (15 % greater than alternatives) and low drag, enabling robust turbine orientation even at wind speeds of 8 m/s. However, off-axis wind angles exceeding 15° degrade performance drastically, reducing the coefficient of performance (COP) by 26 % and 81 % at 20° and 25°, respectively, highlighting the importance of passive yaw control. The findings contribute to optimizing the paired airfoil wind energy system for improved performance in urban wind conditions. The study concludes that integrating streamlined tail vanes, such as the NACA0012, significantly enhances the viability of motionless wind turbines for urban deployment, offering a cost-effective solution to harness low-to-medium wind speeds with minimal maintenance.http://www.sciencedirect.com/science/article/pii/S2590174525003393Passive yaw systemMotionless wind energyUrban wind turbineAirfoil pair |
| spellingShingle | Umair Munir S.M.A. Naqvi Yousra Filali Baba Patrick Hays Rice Uzair Sajjad Gwi Hyun Lee Muhammad Imtiaz Hussain Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system Energy Conversion and Management: X Passive yaw system Motionless wind energy Urban wind turbine Airfoil pair |
| title | Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system |
| title_full | Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system |
| title_fullStr | Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system |
| title_full_unstemmed | Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system |
| title_short | Numerical analysis of off-axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system |
| title_sort | numerical analysis of off axis wind and passive yaw control of an opposing airfoil paired motionless wind energy system |
| topic | Passive yaw system Motionless wind energy Urban wind turbine Airfoil pair |
| url | http://www.sciencedirect.com/science/article/pii/S2590174525003393 |
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