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An Experimental Study on Broadband Noise of a Propeller Fan
http://hdl.handle.net/10069/27325
http://hdl.handle.net/10069/27325e0815ecb-e97d-46e8-9d0f-965f1be4e7d7
名前 / ファイル | ライセンス | アクション |
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42_78_01.pdf (1.6 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2012-01-30 | |||||
タイトル | ||||||
タイトル | An Experimental Study on Broadband Noise of a Propeller Fan | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Turbo Machinery | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Aerodynamic Noise | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Wake | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Separation | |||||
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 | departmental bulletin paper | |||||
著者 |
Sasaki, Soichi
× Sasaki, Soichi |
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著者別名 | ||||||
姓名 | 佐々木, 壮一 | |||||
その他のタイトル | ||||||
その他のタイトル | プロペラファンの広帯域騒音に関する実験的研究 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The present research is a preliminary attempt towards the prediction of the broadband noise from the flow features, compatible with industrial constraints. In the case of low-solidity impeller, the wake rapidly expands in a wide outer part of the blades under the influence of the separation forced by the tip vortex. The broadband noise level in the low-frequency domain became large because the wake vortices with large scale in the low frequency domain were shed from the blade. Since the relative flow of the high-solidity impeller at the maximum efficiency point remains attached over the blades, the strength of vortex-shedding in the wake is reduced. Therefore the broadband noise at the maximum efficiency point is substantially decreased. At the off-design point in low flow rate, the number of blades has limited influence on the flow regime in the wake because separation likely occurs from the leading edge. In this case, the broadband noise increases with the number of blades. | |||||
書誌情報 |
長崎大学大学院工学研究科研究報告 en : Reports of Graduate School of Engineering, Nagasaki University 巻 42, 号 78, p. 1-7, 発行日 2012-01 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18805574 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12601998 | |||||
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 | |||||
出版者 | ||||||
出版者 | 長崎大学大学院工学研究科 | |||||
出版者別言語 | ||||||
Graduate School of Engineering, Nagasaki University | ||||||
sortkey | ||||||
1 | ||||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 長崎大学大学院工学研究科研究報告, 42(78), pp.1-7; 2012 |