フルテキストファイル
著者
古川 勝 Faculty of Engineering, Tottori University 研究者総覧 KAKEN
原 豊 Faculty of Engineering, Tottori University 研究者総覧 KAKEN
Jodai, Yoshifumi Department of Mechanical Engineering, Kagawa National Institute of Technology (KOSEN)
キーワード
vertical-axis wind turbine
phase synchronization
analytical model
Bernoulli’s law
抄録
The phase-synchronized rotation of a pair of closely spaced vertical-axis wind turbines has been found in wind tunnel experiments and computational fluid dynamics (CFD) simulations. During phase synchronization, the two wind turbine rotors rotate inversely at the same mean angular velocity. The blades of the two rotors pass through the gap between the turbines almost simultaneously, while the angular velocities oscillate with a small amplitude. A pressure drop in the gap region, explained by Bernoulli’s law, has been proposed to generate the interaction torque required for phase synchronization. In this study, an analytical model of the interaction torques was developed. In our simulations using the model, (i) phase synchronization occurred, (ii) the angular velocities of the rotors oscillated during the phase synchronization, and (iii) the oscillation period became shorter and the amplitude became larger as the interaction became stronger. These observations agree qualitatively with the experiments and CFD simulations. Phase synchronization was found to occur even for a pair of rotors with slightly different torque characteristics. Our simulation also shows that the induced flow velocities influence the dependence of the angular velocities during phase synchronization on the rotation directions of the rotors and the distance between the rotors.
出版者
MDPI
資料タイプ
学術雑誌論文
外部リンク
EISSN
19961073
掲載誌名
ENERGIES
15
11
発行日
2022-06
出版者DOI
著者版フラグ
出版社版
著作権表記
(C) 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
掲載情報
Furukawa, Masaru, Hara Yutaka, Jodai Yoshifumi. Analytical Model for Phase Synchronization of a Pair of Vertical-Axis Wind Turbines. Energies 2022, 15(11), 4130. https://doi.org/10.3390/en15114130.
部局名
工学部・工学研究科
言語
英語