Vertical-Axis Wind Turbine Blade-Shape Optimization Using a Genetic Algorithm and Direct-Forcing Immersed Boundary Method
Publication: Journal of Energy Engineering
Volume 147, Issue 2
Abstract
The aim of this study was to prove that an optimization method combining genetic algorithms with a direct-forcing immersed boundary method as a distinguished numerical method could improve the performance of vertical-axis wind turbine blades. The proposed direct-force immersed boundary (DFIB) flow solver was tested using the benchmark laminar flow problems (lid-driven flow, flow over a stationary cylinder, and vortex-induced vibration of the circular cylinder). Two cases were analyzed, one of a stationary airfoil and another of a rotating airfoil in a vertical-axis wind turbine. The analysis was carried out using two-dimensional flow simulations in a laminar flow regime. A NACA 0012 airfoil was used as the original airfoil cross section of the vertical-axis wind turbine. The proposed method successfully simulated the moving blade in the flow field, and the results revealed that the optimized wind turbine blade designed using the proposed method had an efficiency improvement of 5.61% compared to the original airfoil.
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Data Availability Statement
Data in Figs. 6, 10, and 11–22 that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors are grateful for the financial support provided for this work by the Ministry of Science and Technology, Taiwan under Grant No. MOST-107-2221-E-011-075-MY3.
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Published In
Journal of Energy Engineering
Volume 147 • Issue 2 • April 2021
Copyright
© 2020 American Society of Civil Engineers.
History
Received: Dec 5, 2019
Accepted: Oct 9, 2020
Published online: Dec 28, 2020
Published in print: Apr 1, 2021
Discussion open until: May 28, 2021
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