2021 Fiscal Year Final Research Report
Development of Extended BEM Method Which Includes the Rotor-Tower Aerodynamic Interaction of Downwind Turbines
| Project/Area Number |
19K04195
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 19010:Fluid engineering-related
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| Research Institution | Saga University (2021)
Kyushu University (2019-2020) |
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Principal Investigator |
Yoshida Shigeo 佐賀大学, 海洋エネルギー研究センター, 教授 (80620137)
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| Project Period (FY) |
2019-04-01 – 2022-03-31
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| Keywords | 風力発電 / 風車 / ロータ / ダウンウィンド / タワーシャドウ / 翼素・運動量理論 / 荷重 / モデル |
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| Outline of Final Research Achievements |
Design and analysis models and methods were developed in this research to extend the blade-element and momentum (BEM) theory, which is a conventional design and analysis method for wind turbines. 1) blade dynamic load based on the dynamic stall model of the thin airfoil theory, with the tower wake model. 2) aeroelastic coupled analysis code which is applicable for multi-rotor systems. 3) definition of the diffuser total efficiency and diffuser optimization method. They are expected to contribute for enlargement and cost reduction of wind turbines in the future.
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| Free Research Field |
流体機械
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| Academic Significance and Societal Importance of the Research Achievements |
データ生産性が高く，風車の設計・解析に必要な構造変形や制御との併用に適している翼素・運動量理論に，運動量理論，揚力線理論，薄翼理論などを組み合わせることにより，高フィデリティの解析を再現する従来にないモデルを開発した点で学術的に重要な成果である．
また，本成果は国際エネルギー機関IEA Windに推奨方法として提案しており，将来の超大型の浮体式洋上風車の安全性・経済性の向上に寄与することが期待できる点で，社会的な意味も大きい．
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