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タイトル: 後縁騒音モデルに基づく低速プロペラファンの広帯域騒音の予測
その他のタイトル: Prediction on Broadband Noise of a Low Speed Propeller Fan Based on Amiet’s Trailing Edge Noise Model
著者: 佐々木, 壮一 / 鳥瀬, 一貴 / 村上, 寛明 / 坂田, 涼
著者(別表記) : Sasaki, Soichi / Torise, Ikki / Murakami, Hiroaki / Sakata, Ryo
発行日: 2013年 1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, 43(80), pp.19-24; 2013
抄録: Recent years, the trailing-edge noise model proposed by Prof. Michel Roger et al. in 2005 is utilized in the field of the aerodynamic noise prediction. In this report, the analytical theory is explained focusing on the mathematical description about the back-scattering model. Moreover, the prediction on the broadband noise spectra generated by a propeller fan with the semi-empirical models of the flow regime is discussed. The radiation integral of the disturbance pressure on the blade wall is given by the Amiet's model which is the scattering equivalent sources as if the airfoil were infinite in the upstream direction; the Corcos' model is employed for the span-wise correlation length. Furthermore, the wall pressure spectrum of the Gliebe's model on the blade is used. It was clarified that the aerodynamic noise sources formed by the back-scattering of the disturbance in the vicinity of the trailing edge produce the broadband noise in the high frequency domain.
キーワード: Pressure Fluctuation / Turbomachinery / Aerodynamic Noise
URI: http://hdl.handle.net/10069/30500
ISSN: 18805574
資料タイプ: Departmental Bulletin Paper
原稿種類: publisher
出現コレクション:第43巻 第80号

引用URI : http://hdl.handle.net/10069/30500



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