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多翼ファンの空力音源に及ぼす舌部隙間流れの影響
http://hdl.handle.net/10069/24629
http://hdl.handle.net/10069/24629fa4d5ac5-cacd-4ab4-9878-85db4bb63ae8
名前 / ファイル | ライセンス | アクション |
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41_76_2.pdf (2.4 MB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2011-02-10 | |||||
タイトル | ||||||
タイトル | 多翼ファンの空力音源に及ぼす舌部隙間流れの影響 | |||||
言語 | ||||||
言語 | jpn | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Fan | |||||
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 | Numerical Simulation | |||||
キーワード | ||||||
主題Scheme | Other | |||||
主題 | Fluid Force | |||||
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 |
佐々木, 壮一
× 佐々木, 壮一× 黒田, 晃伸× 林, 秀千人 |
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著者別名 | ||||||
姓名 | Sasaki, Soichi | |||||
著者別名 | ||||||
姓名 | Kuroda, Akinobu | |||||
著者別名 | ||||||
姓名 | Hayashi, Hidechito | |||||
その他のタイトル | ||||||
その他のタイトル | Influence of Tongue Clearance Flow on Aerodynamic Noise Source of a Forward Curved Fan | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A visualization method of aerodynamic noise source based on momentum in wake of a centrifugal impeller is proposed. The characteristics of the fan noise operated at the design point and the off design point are discussed by the visualization. When the flow rate changed from the design point to the off design point, the overall noise level of the fan has increased by 3 dB (A) because of the broadband noise. According to the visualization of aerodynamic noise source proposed by this study, it clarified that the domain of the flow related to the fan noise exists at the vicinity of the volute tongue. Since the flow almost flows out to the exit of the fan at the off-design, the large difference of the momentum in the wake occurred at the vicinity of the volute tongue. It is shown that the flow pattern at the vicinity of the volute tongue is one of the reasons for increasing of the fan noise. | |||||
書誌情報 |
長崎大学工学部研究報告 en : Reports of the Faculty of Engineering, Nagasaki University 巻 41, 号 76, p. 7-12, 発行日 2011-01 |
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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 | AA12080680 | |||||
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 | 長崎大学工学部 | |||||
出版者別言語 | ||||||
Faculty of Engineering, Nagasaki University | ||||||
引用 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 長崎大学工学部研究報告, 41(76), pp.7-12; 2011 |