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タイトル: 小型プロペラ風車から発生する周期性騒音の空力音源に関する研究
その他のタイトル: Study of Aerodynamic Noise Source of Periodical Noise Generated from a Micro Wind Turbine
著者: 佐々木, 壮一 / 坂田, 涼
著者(別表記) : Sasaki, Soichi / Sakada, Ryo
発行日: 2014年 7月
出版者: 長崎大学大学院工学研究科 / Graduate School of Engineering, Nagasaki University
引用: 長崎大学大学院工学研究科研究報告, 44(83), pp.1-6; 2014
抄録: In this study, the relationship between the periodic noise and the aerodynamic noise source of a wind turbine is discussed. The aerodynamic characteristics and the noise of the actual wind turbine were measured by wind tunnel; the flow around the impeller immersed in the uniform flow was solved by numerical simulation. In the observed wind turbine, when the mainstream velocity was 7.4 m/s or more, the power coefficient became the maximum at the tip speed ratio 8. When the mainstream velocity became fast in the driving condition of the maximum power point, the aerodynamic noise became large due to the periodical noise in the vicinity of the 1000 Hz and the broadband noise in the high frequency domain. The noise sources were concentrated at the leading edge and the trailing edge on the suction surface side. We indicated that the pressure fluctuation of the leading edge was the noise source of the periodical noise.
キーワード: Aerodynamic Noise / Wind Turbine / Renewable Energy
URI: http://hdl.handle.net/10069/34563
ISSN: 18805574
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:第44巻 第83号

引用URI : http://hdl.handle.net/10069/34563



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