Abstract
Vertical axis wind turbines (VAWTs) present distinct advantages over their horizontal axis counterparts (HAWTs), in terms of their adaptability to challenging environmental conditions. This research centers on the optimization of VAWTs, specifically employing helical blades. In the initial phase, the study systematically explores two key phases of design adjustment: the manipulation of rotor diameter and blade length. By undertaking this comprehensive investigation, we aim to elucidate the profound impact of these design alterations on turbine performance. Our model incorporates NACA 0018 blades from the 4-digit series. The results of our investigation unveil compelling findings. The Cp-TSR ratio upsurges by almost 18% as the rotor radius increases from 1.44 to 1.68C. Furthermore, an increase in blade length from 4.00 to 4.48C results in a significant 10.5% rise in the Cp-TSR ratio. In the subsequent phase, this work encompasses both static structural and modal analyses. The static structural analysis evaluates the structure's behavior under static conditions, ensuring its structural integrity and performance under varying wind forces. Concurrently, modal analysis delves into the dynamic characteristics of the structure, with a particular focus on its natural frequencies and mode shapes, which are indispensable for assessing its response to dynamic loads.
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Data are available on request from the authors.
Abbreviations
- VAWT:
-
Vertical axis wind turbine
- HAWT:
-
Horizontal axis wind turbine
- SB-VAWT:
-
Straight-bladed vertical axis wind turbine
- HB-VAWT:
-
Helical-bladed vertical axis wind turbine
- C P :
-
Power coefficient
- C T :
-
Torque coefficient
- T :
-
Torque (N m)
- U :
-
Wind speed (m/s)
- P :
-
Power (W)
- A :
-
Rotor-swept area (m2)
- C :
-
Airfoil chord length (m)
- H :
-
Length of blade (m)
- N :
-
Number of blades
- D :
-
Rotor diameter (m)
- R :
-
Rotor radius (m)
- l cr :
-
Circumference of the rotor (m)
- ρ :
-
Wind density (kg/m3)
- ω :
-
Angular velocity (rad/s)
- Λ :
-
Tip speed ratio
- δ :
-
Solidity
- θ :
-
Azimuth angle of rotor against the wind (°)
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Acknowledgements
We gratefully acknowledge the support and resources provided by the University of Engineering & Technology (U.E.T.) Lahore, Pakistan in facilitating this research.
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All authors substantially contributed to the study's conception and design. [Waqar ul Hassan] and [Asif Jalal] conducted material preparation, data collection, and analysis, while [Muhammad Ahmad Bilal], [Hafsa Asghar], and [Muhammad Zaid Buzal] were responsible for methodology development and project administration. The initial manuscript draft was authored by [Waqar ul Hassan] and [Asif Jalal], with all authors providing valuable feedback on previous versions. [Ussama Ali] oversaw the project, performed critical reviews, and contributed to the manuscript's final editing. All authors have reviewed and approved the final manuscript.
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Hassan, W., Jalal, A., Bilal, M.A. et al. Parametric analysis of a helical-bladed vertical axis wind turbine. J. Ocean Eng. Mar. Energy (2024). https://doi.org/10.1007/s40722-024-00318-0
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DOI: https://doi.org/10.1007/s40722-024-00318-0