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Cooksey, A. and Afazov, S. 
ORCID: 0000-0001-5346-1933,
2024.
Design of a variable-pitch vertical-axis wind turbine with embedded resilient biasing device inside an aerofoil.
Smart Materials and Methods, 1 (2), pp. 85-92.
ISSN 2996-3176
Abstract
This study addresses the design of a vertical-axis wind turbine (VAWT) by introducing a novel passive pitch mechanism. Traditional VAWTs, while advantageous for urban environments due to their simple design, omni-directional operation, and low cut-in wind speeds, often suffer from low starting torque and poor self-starting capabilities. To overcome these issues, a recently patented resilient biasing device was integrated into the blade’s aerofoil. Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) were employed to enable the design, prototype, and test of the blade. The CFD simulations predicted aerodynamic forces, which were then used in FEA to assess structural deflections. The key findings from wind tunnel tests of the prototype blade show a logarithmic correlation between wind speed and pitch angle. The novel resilient biasing device acting as a torsional spring effectively returned the angle of attack to zero after force removal. The wind tunnel test results demonstrated that the pitch angle can be changed under wind load, hence leading to potential improvements in starting torque and self-starting capabilities. The results validate the concept of embedding a resilient biasing device for passive pitch control, paving the way for optimizing passive pitch mechanisms to enable the self-starting ability and overall efficiency of VAWTs.
| Item Type: | Journal article | ||||||
|---|---|---|---|---|---|---|---|
| Publication Title: | Smart Materials and Methods | ||||||
| Creators: | Cooksey, A. and Afazov, S. | ||||||
| Publisher: | Taylor & Francis | ||||||
| Date: | August 2024 | ||||||
| Volume: | 1 | ||||||
| Number: | 2 | ||||||
| ISSN: | 2996-3176 | ||||||
| Identifiers: |
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| Rights: | This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent. | ||||||
| Divisions: | Schools > School of Science and Technology | ||||||
| Record created by: | Jonathan Gallacher | ||||||
| Date Added: | 23 Sep 2024 10:01 | ||||||
| Last Modified: | 23 Sep 2024 10:01 | ||||||
| URI: | https://irep.ntu.ac.uk/id/eprint/52273 |
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