Articles | Volume 7, issue 2
https://doi.org/10.5194/wes-7-677-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/wes-7-677-2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Parked and operating load analysis in the aerodynamic design of multi-megawatt-scale floating vertical-axis wind turbines
Mohammad Sadman Sakib
Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA
Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, USA
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Daniel Bouzolin and D. Todd Griffith
Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2026-205, https://doi.org/10.5194/wes-2026-205, 2026
Preprint under review for WES
Short summary
Short summary
This study investigates the novel application of pitch control to a troposkein-shaped Darrieus vertical axis wind turbine (VAWT). Results indicate that pitching only a partial blade span and/or struts can regulate rated power, increase annual energy production (AEP) and reduce fatigue loads. The findings of this study lay the foundation for promising new operating strategies using partial-span blade pitch and/or strut pitch control for troposkein-shaped Darrieus VAWTs.
Md. Sanower Hossain and D. Todd Griffith
Wind Energ. Sci., 10, 1211–1230, https://doi.org/10.5194/wes-10-1211-2025, https://doi.org/10.5194/wes-10-1211-2025, 2025
Short summary
Short summary
The document presents an experimental study on the parked loads of floating vertical axis wind turbines (VAWTs) in a wind and wave basin, focusing on the effects of wind speed, solidity, and floating platform dynamics. Findings show that higher wind speed and higher solidity generally increase the parked loads, while a floating platform introduces additional effects due to tilting. A semi-numerical model was also presented to predict the parked loads, which helps enhance VAWT design.
Mayank Chetan, Shulong Yao, and D. Todd Griffith
Wind Energ. Sci., 7, 1731–1751, https://doi.org/10.5194/wes-7-1731-2022, https://doi.org/10.5194/wes-7-1731-2022, 2022
Short summary
Short summary
Though large wind turbines are appealing to reduce costs, larger blades are prone to aero-elastic instabilities due to their long, slender, highly flexible nature. New rotor concepts are emerging including two-bladed rotors and downwind configurations. We introduce a comprehensive evaluation of flutter behavior including classical flutter and edgewise vibration for large-scale two-bladed rotors. The study aims to provide designers with insights to mitigate flutter in future designs.
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Short summary
This paper presents a comprehensive aerodynamic design study for a 5 MW Darrieus offshore VAWT in the context of multi-megawatt floating VAWTs. This study systematically analyzes the effect of different, important design variables including the number of blades, aspect ratio and blade chord tapering in a comprehensive load analysis of both the parked and operating aerodynamic loads including turbine power performance analysis using a vortex-based aerodynamic model.
This paper presents a comprehensive aerodynamic design study for a 5 MW Darrieus offshore VAWT...
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