{"id":10236,"date":"2026-08-19T21:39:32","date_gmt":"2026-08-19T13:39:32","guid":{"rendered":"\/jase\/?post_type=tkuisotope&p=10236"},"modified":"2026-08-19T23:06:50","modified_gmt":"2026-08-19T15:06:50","slug":"jase-202611-34-055","status":"publish","type":"tkuisotope","link":"\/jase\/?tkuisotope=jase-202611-34-055","title":{"rendered":"Optimization of VAWT via Coupled Guide Structure and Blade Pitch Angle"},"content":{"rendered":"\n
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<\/i> 2026<\/a><\/p>\n<\/div>\n\n\n\n

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<\/i> Volume 34<\/a><\/p>\n<\/div>\n\n\n\n

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Xiaoju Yin1<\/sup><\/i><\/a> , Wei Zhang1<\/sup>, Jian Wang2<\/sup>, Yong Guo3<\/sup>, Zijing Wang1<\/sup>, and Tienan Yang3<\/sup><\/p>\n\n\n\n

1School of New Energy, Shenyang Institute of Engineering, No. 18, Puchang Road, Shenbei New District, Shenyang, Liaoning
110136, P. R. China<\/p>\n\n\n\n

2<\/sup>Shenyang Urban Investment New Energy Group Co., Ltd., Shenyang, Liaoning 110000, P. R. China<\/p>\n\n\n\n

3<\/sup>Huaneng International Power Co., Ltd., Yingkou Power Plant, Yingkou, Liaoning 115007, P. R. China<\/p>\n<\/div>\n\n\n\n

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Received: June 06, 2026
Accepted: June 24, 2026
Publication Date: August 19, 2026<\/p>\n<\/div>\n<\/div>\n\n\n\n

\"\u4e0a\u50b3\u5716\u7247\"\n\n\n

Velocity triangle and aerodynamic analysis of the VAWT rotation cycle.<\/p>\n<\/div>\n<\/div>\n\n\n\n

<\/i> Copyright <\/strong>The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0)<\/a>, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.<\/p>\n\n\n\n

Download Citation:\u00a0 BibTeX <\/a>| http:\/\/dx.doi.org\/10.6180\/jase.202611_34.055<\/a>\u00a0\u00a0<\/p>\n\n\n\n

Download PDF<\/a><\/p>\n\n\n\n

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The unsteady dynamic stall phenomenon in lift-type vertical axis wind turbines (VAWTs) severely limits their commercial deployment. This study proposes a strategy that integrates a circular-array air guide structure with blade pitch angle adjustment. The proposed “flow field enhancement\u2013blade adaptation” coupling strategy employs the SST k-\u03c9 turbulence model to perform transient flow field analysis of a three-bladed VAWT under various operating conditions. Through numerical simulation, a combination of air guide structure and blade pitch angle \u03b2 = 10\u00b0 was identified as the most effective configuration. The numerical results show that the synergistic combination of the air guide structure and a blade pitch angle of \u03b2 = 10\u00b0 increases the peak power coefficient by 4.58% compared with the \u03b2 = 0\u00b0 baseline, while the average torque is increased by 48.3% relative to a conventional VAWT without the guide structure. The results indicate that under the modified flow conditions produced by the guide structure, a positive pitch angle\u2014which is typically suboptimal for an unguided VAWT becomes the most effective setting, highlighting the importance of treating the guide structure and blade pitch as a coupled system, offering a promising approach for urban VAWT applications.<\/p>\n\n\n\n

Keywords: VAWT, dynamic stall, air guide structure, pitch angle, coupled configuration, numerical simulation.<\/em><\/p>\n\n\n\n

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  1. [1] C. Sarmiento-Laurel, A. J. D\u00edaz, I. Torres, R. C\u00e1ceres-Gonz\u00e1lez, and L. Silva-Llanca, (2025) “3D numerical analysis of an H-rotor darrieus vertical axis wind turbine in transient regime” Energy 324: 135849. DOI: 10.1016\/j.energy.2025.135849.<\/li>\n
  2. [2] S. Roga, S. Bardhan, Y. Kumar, and S. K. Dubey, (2022) “Recent technology and challenges of wind energy generation: A review” Sustainable Energy Technologies and Assessments 52: 102239. DOI: 10.1016\/j.seta.2022.102239.<\/li>\n
  3. [3] F. Ghafoorian, S. R. Mirmotahari, and H. Wan, (2024) “Numerical study on aerodynamic performance improvement and efficiency enhancement of the savonius vertical axis wind turbine with semi-directional airfoil guide vane” Ocean Engineering 307: 118186. DOI: 10.1016\/j.oceaneng.2024.118186.<\/li>\n
  4. [4] A. Ulus and S. I. Moldovan, (2025) “Optimization of Vertical Axis Wind Turbine Systems to Capture Vehicle-Induced Highway Winds” Energies 18: 3139. DOI: 10.3390\/en18123139.<\/li>\n
  5. [5] M. Khudri Johari, M. Azim A Jalil, and M. Faizal Mohd Shariff, (2018) “Comparison of horizontal axis wind turbine (HAWT) and vertical axis wind turbine (VAWT)” International Journal of Engineering and Technology 7: 74\u201380. DOI: 10.14419\/ijet.v7i4.13.21333.<\/li>\n
  6. [6] A. Abdolahifar, H. Montazeri, and A. Zanj, (2026) “Towards enhanced startup performance of Darrieus vertical-axis wind turbines: Key flow features at moderate tip speed ratios” Renewable Energy 256: 123778. DOI: 10.1016\/j.renene.2025.123778.<\/li>\n
  7. [7] M. Ahmadi-Baloutaki, R. Carriveau, and D. S.-K. Ting, (2016) “A wind tunnel study on the aerodynamic interaction of vertical axis wind turbines in array configurations” Renewable Energy 96: 904\u2013913. DOI: 10.1016\/j.renene.2016.05.060.<\/li>\n
  8. [8] J. Joseph, S. Sridhar, S. A., and J. Radhakrishnan, (2024) “Analyzing dynamic stall on tubercle mounted VAWT blades: A simplistic experimental approach using an oscillating rig” Sustainable Energy Technologies and Assessments 71: 103962. DOI: 10.1016\/j.seta.2024.103962.<\/li>\n
  9. [9] O. Erkan, M. \u00d6zkan, Y. \u00c7elik, and M. S. U. Khalid, (2025) “Taguchi-based multi-factor analysis of self-starting behavior in vertical axis wind turbine farms” Energy 341: 139495. DOI: 10.1016\/j.energy.2025.139495.<\/li>\n
  10. [10] Y. Wang, X. Sun, X. Dong, B. Zhu, D. Huang, and Z. Zheng, (2016) “Numerical investigation on aerodynamic performance of a novel vertical axis wind turbine with adaptive blades” Energy Conversion and Management 108: 275\u2013286. DOI: 10.1016\/j.enconman.2015.11.003.<\/li>\n
  11. [11] Q. Cheng, X. Liu, H. S. Ji, K. C. Kim, and B. Yang, (2017) “Aerodynamic Analysis of a Helical Vertical Axis Wind Turbine” Energies 10: 575. DOI: 10.3390\/en10040575.<\/li>\n
  12. [12] Y. Li, S. Zhao, K. Tagawa, and F. Feng, (2018) “Starting performance effect of a truncated-cone-shaped wind gathering device on small-scale straight-bladed vertical axis wind turbine” Energy Conversion and Management 167: 70\u201380. DOI: 10.1016\/j.enconman.2018.04.062.<\/li>\n
  13. [13] T. Jiang, Q. Mo, and L. Luo, (2025) “Study on the Effect of Pitch Angle on the Aerodynamic Characteristics of a Vertical Axis Wind Turbine with a Dimple-Gurney Flap” Journal of Physics: Conference Series 3086: 012001. DOI: 10.1088\/1742-6596\/3086\/1\/012001.<\/li>\n
  14. [14] E. Fatahian, F. Ismail, M. H. H. Ishak, and W. S. Chang, (2024) “Novel passive flow control method using leading-edge prism-shaped cylinder: Performance enhancement of vertical-axis wind turbines” Physics of Fluids 36: 115170. DOI: 10.1063\/5.0233464.<\/li>\n
  15. [15] A. Gupta, U. Ali, H. A. Abderrahmane, and I. Janajreh, (2025) “Blade pitching in vertical axis wind turbines: A double multiple stream tube theoretical approach to performance enhancement” Heliyon 11: e42101. DOI: 10.1016\/j.heliyon.2025.e42101.<\/li>\n
  16. [16] A. Escudero Romero, A. P. Blasetti, J. G. Acosta-L\u00f3pez, M.-\u00c1. G\u00f3mez-Garc\u00eda, and H. de Lasa, (2024) “Vorticity and Its Relationship to Vortex Separation, Dynamic Stall, and Performance, in an H-Darrieus Vertical-Axis Wind Turbine Using CFD Simulations” Processes 12: 1556. DOI: 10.3390\/pr12081556.<\/li>\n
  17. [17] Q. Zhang, W. Miao, K. Zhao, C. Li, L. Chang, M. Yue, and Z. Xu, (2025) “Influence of Geometric Effects on Dynamic Stall in Darrieus-Type Vertical-Axis Wind Turbines for Offshore Renewable Applications” Journal of Marine Science and Engineering 13: 1327. DOI: 10.3390\/jmse13071327.<\/li>\n
  18. [18] G. Tong, Y. Li, K. Tagawa, and F. Feng, (2023) “Effects of blade airfoil chord length and rotor diameter on aerodynamic performance of straight-bladed vertical axis wind turbines by numerical simulation” Energy 265: 126325. DOI: 10.1016\/j.energy.2022.126325.<\/li>\n
  19. [19] Y. Yang, Z. Guo, Q. Song, Y. Zhang, and Q. Li, (2018) “Effect of Blade Pitch Angle on the Aerodynamic Characteristics of a Straight-bladed Vertical Axis Wind Turbine Based on Experiments and Simulations” Energies 11: 1514. DOI: 10.3390\/en11061514.<\/li>\n
  20. [20] M. Islam, D. Ting, and A. Fartaj, (2008) “Aerodynamic models for Darrieus-type straight-bladed vertical axis wind turbines” Renewable and Sustainable Energy Reviews 12: 1087\u20131109. DOI: 10.1016\/j.rser.2006.10.023.<\/li>\n
  21. [21] M. H. Shojaeefard, M. Tahani, M. B. Ehghaghi, H. Fallah Ardeshir, and M. Beglari, (2012) “Corrigendum to Numerical study of the effects of some geometric characteristics of a centrifugal pump impeller that pumps a viscous fluid [Computers and Fluids 60 (2012) 61-70]” Computers and Fluids 64: 157. DOI: 10.1016\/j.compfluid.2012.06.014.<\/li>\n
  22. [22] S. Ouchene, A. Smaili, and H. Fellouah, (2024) “On the estimation of the angle of attack for vertical axis wind turbines” International Journal of Numerical Methods for Heat and Fluid Flow 34: 2626\u20132653. DOI: 10.1108\/hff-09-2022-0566.<\/li>\n
  23. [23] F. R. Menter, (1994) “Two-equation eddy-viscosity turbulence models for engineering applications” AIAA Journal 32: 1598\u20131605. DOI: 10.2514\/3.12149.<\/li>\n
  24. [24] W.-H. Chen, C.-Y. Chen, C.-Y. Huang, and C.-J. Hwang, (2017) “Power output analysis and optimization of two straight-bladed vertical-axis wind turbines” Applied Energy 185: 223\u2013232. DOI: 10.1016\/j.apenergy.2016.10.076.<\/li>\n
  25. [25] A. S. Saad, I. I. El-Sharkawy, S. Ookawara, and M. Ahmed, (2020) “Performance enhancement of twisted-bladed Savonius vertical axis wind turbines” Energy Conversion and Management 209: 112673. DOI: 10.1016\/j.enconman.2020.112673.<\/li>\n
  26. [26] N. Kalassov, Z. Baizhuma, R. Manatbayev, A. Yershina, M. Isataev, A. Kalassova, Z. Seidulla, B. Bektibay, and B. Amir, (2025) “Integrated Approach to Aerodynamic Optimization of Darrieus Wind Turbine Based on the Taguchi Method and Computational Fluid Dynamics (CFD)” Applied Sciences 15: 5739. DOI: 10.3390\/app15105739.<\/li>\n
  27. [27] M. Elkhoury, T. Kiwata, K. Nagao, T. Kono, and F. ElHajj, (2018) “Wind tunnel experiments and Delayed Detached Eddy Simulation of a three-bladed micro vertical axis wind turbine” Renewable Energy 129: 63\u201374. DOI: 10.1016\/j.renene.2018.05.096.<\/li>\n
  28. [28] A. L. G. Santos, J. C. Martins, L. A. Isoldi, G. d. C. Dias, L. A. O. Rocha, J. A. Souza, and E. D. dos Santos, (2024) “Numerical Analysis of the Influence of Rectangular Deflectors and Geometry of L-Shaped Channel over the Performance of a Savonius Turbine” Journal of Marine Science and Engineering 13: 28. DOI: 10.3390\/jmse13010028.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

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