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一様流中に置かれたNACA0012翼から発生する離散周波数騒音の発生機構に関する実験的研究
http://hdl.handle.net/10069/6705
http://hdl.handle.net/10069/67055e4df25c-f81d-4905-8f63-09e1e4bd45b7
名前 / ファイル | ライセンス | アクション |
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kikaiB559_802.pdf (346.2 kB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2007-02-22 | |||||
タイトル | ||||||
タイトル | 一様流中に置かれたNACA0012翼から発生する離散周波数騒音の発生機構に関する実験的研究 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Vortex | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Aerodynamic Acoustics | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Wake | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Blade | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Separation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Unsteady Flow | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
林, 秀千人
× 林, 秀千人× 深野, 徹× 児玉, 好雄 |
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著者別名 | ||||||
姓名 | Hayashi, Hidechito | |||||
著者別名 | ||||||
姓名 | Fukano, Tohru | |||||
著者別名 | ||||||
姓名 | Kodama, Yoshio | |||||
その他のタイトル | ||||||
その他のタイトル | Experimental Investigation into the Mechanism of Discrete Frequency noise (DFN) Generation from a NACA 0012 Blade | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | An experimental investigation was made into the mechanism of discrete frequency noise ( DFN )generation from a NACA 0012 blade placed in a uniform oncoming flow. It was clarified that DFN was generated when the boundary layer on the blade surface was laminar and separated at the location upstream of the trailing edge. A dead air region was formed just after the trailing edge of the blade. Therefore a Karman vortex street occurred. Meanwhile we could not observe a close relationship between the existence of a separation bubble and the generation of DFN. That is, DFN was generated even when the attack angle of the flow was nearly zero and no separation bubble was observed. When a separation bubble existed, the boundary layer became turbulent and the flow did not separate up to the trailing edge, so a dead air region was not formed behind the blade, which resulted in the disappearance of DFN. The prediction of the sound pressure level of DFN generated from this stream lined blade by Fukano's theory for a flat plate model agreed well with the measured value. | |||||
書誌情報 |
日本機械学会論文集. B編 巻 59, 号 559, p. 802-806, 発行日 1993-03-25 |
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出版者 | ||||||
出版者 | 日本機械学会 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 03875016 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AN00187441 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 日本機械学會論文集. B編 59(559) p.802-806 1993 |