Articles | Volume 10, issue 2
https://doi.org/10.5194/wes-10-381-2025
https://doi.org/10.5194/wes-10-381-2025
Research article
 | 
04 Feb 2025
Research article |  | 04 Feb 2025

Effect of blade inclination angle for straight-bladed vertical-axis wind turbines

Laurence Morgan, Abbas Kazemi Amiri, William Leithead, and James Carroll

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Cited articles

Bianchini, A., Balduzzi, F., Rainbird, J. M., Peiro, J., Graham, J. M. R., Ferrara, G., and Ferrari, L.: An experimental and numerical assessment of airfoil polars for use in Darrieus wind turbines – Part II: Post-stall data extrapolation methods, J. Eng. Gas Turb. Power, 138, 032603, https://doi.org/10.1115/1.4031270, 2016. a
Bianchini, A., Balduzzi, F., Bachant, P., Ferrara, G., and Ferrari, L.: Effectiveness of two-dimensional CFD simulations for Darrieus VAWTs: a combined numerical and experimental assessment, Energ. Convers. Manage., 136, 318–328, 2017. a
Bianchini, A., Balduzzi, F., Ferrara, G., Persico, G., Dossena, V., and Ferrari, L.: A Critical Analysis on Low-Order Simulation Models for Darrieus Vawts: How Much Do They Pertain to the Real Flow?, J. Eng. Gas Turb. Power, 141, 011018, https://doi.org/10.1115/1.4040851, 2018. a
Borg, M., Collu, M., and Brennan, F. P.: Offshore floating vertical axis wind turbines: Advantages, disadvantages, and dynamics modelling state of the art, RINA, Royal Institution of Naval Architects – International Conference on Marine and Offshore Renewable Energy 2012, London, UK, 26–27 September 2012, 33–46, 2012. a
Cordis: X-ROTOR: X-shaped Radical Offshore wind Turbine for Overall cost of energy Reduction, https://cordis.europa.eu/project/id/101007135 (last access: September 2023), 2023. a
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Short summary
This paper presents a systematic study of the effect of blade inclination angle, chord distribution, and blade length on vertical-axis wind turbine performance. It shows that, for rotors of identical power production, both blade volume and rotor torque can be significantly reduced through the use of aerodynamically optimised inclined rotor blades. This demonstrates the potential of vertical rotors to reduce the cost of energy for offshore wind when compared to horizontal rotors.
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