LAPSE:2023.31754
Published Article
LAPSE:2023.31754
Numerical Analysis of the Dynamic Interaction between Two Closely Spaced Vertical-Axis Wind Turbines
April 19, 2023
To investigate the optimum layouts of small vertical-axis wind turbines, a two-dimensional analysis of dynamic fluid body interaction is performed via computational fluid dynamics for a rotor pair in various configurations. The rotational speed of each turbine rotor (diameter: D = 50 mm) varies based on the equation of motion. First, the dependence of rotor performance on the gap distance (gap) between two rotors is investigated. For parallel layouts, counter-down (CD) layouts with blades moving downwind in the gap region yield a higher mean power than counter-up (CU) layouts with blades moving upwind in the gap region. CD layouts with gap/D = 0.5−1.0 yield a maximum average power that is 23% higher than that of an isolated single rotor. Assuming isotropic bidirectional wind speed, co-rotating (CO) layouts with the same rotational direction are superior to the combination of CD and CU layouts regardless of the gap distance. For tandem layouts, the inverse-rotation (IR) configuration shows an earlier wake recovery than the CO configuration. For 16-wind-direction layouts, both the IR and CO configurations indicate similar power distribution at gap/D = 2.0. For the first time, this study demonstrates the phase synchronization of two rotors via numerical simulation.
Record ID
Keywords
closely spaced arrangements, Computational Fluid Dynamics, dryland, dynamic interaction, phase synchronization, vertical-axis wind turbine, wind energy, wind farm
Subject
Suggested Citation
Hara Y, Jodai Y, Okinaga T, Furukawa M. Numerical Analysis of the Dynamic Interaction between Two Closely Spaced Vertical-Axis Wind Turbines. (2023). LAPSE:2023.31754
Author Affiliations
Hara Y: Faculty of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 680-8552, Japan [ORCID]
Jodai Y: Department of Mechanical Engineering, Kagawa National Institute of Technology (KOSEN), Kagawa College, 355 Chokushi, Takamatsu 761-8058, Japan [ORCID]
Okinaga T: Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 680-8552, Japan
Furukawa M: Faculty of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 680-8552, Japan [ORCID]
Jodai Y: Department of Mechanical Engineering, Kagawa National Institute of Technology (KOSEN), Kagawa College, 355 Chokushi, Takamatsu 761-8058, Japan [ORCID]
Okinaga T: Graduate School of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 680-8552, Japan
Furukawa M: Faculty of Engineering, Tottori University, 4-101 Koyama-Minami, Tottori 680-8552, Japan [ORCID]
Journal Name
Energies
Volume
14
Issue
8
First Page
2286
Year
2021
Publication Date
2021-04-19
Published Version
ISSN
1996-1073
Version Comments
Original Submission
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PII: en14082286, Publication Type: Journal Article
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LAPSE:2023.31754
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doi:10.3390/en14082286
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[v1] (Original Submission)
Apr 19, 2023
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