DSpace university logo mark
Japanese | English 

NAOSITE : Nagasaki University's Academic Output SITE > 060 工学部・工学研究科 > 060 学術雑誌論文 >


ファイル 記述 サイズフォーマット
kikaiB677_67.pdf517.35 kBAdobe PDF本文ファイル

タイトル: スクロールレス遠心ファンの空力特性と騒音に関する研究(インデューサの影響)
その他のタイトル: Characteristics of Aerodynamics and Noise for a Centrifugal Fan without Scroll Casing : Effects of Inducer
著者: 児玉, 好雄 / 荻野, 和郎 / 林, 秀千人 / 高口, 剛 / 大森, 和也
著者(別表記) : Kodama, Yoshio / Ogino, Kazuo / Hayashi, Hidechito / Kouguchi, Tsuyoshi / Oomori, Kazuya
発行日: 2003年 1月25日
出版者: 日本機械学会
引用: 日本機械学會論文集. B編 69(677) p.67-74 2003
抄録: The characteristics of aerodynamics and noise for a centrifugal fan with inducer were investigated by comparison with the fan without inducer. The noise generated by these two kinds of fan consists of the discrete frequency noise and the turbulent noise. The discrete frequency noise can be controlled by some method. Therefore, the noise radiated from the centrifugal fan without scroll casing is mostly the turbulent noise. The noise level radiated from the fan with inducer is similar to that of without inducer. In relation to the aerodynamic characteristics, such as the pressure and the fan efficiency, the former is higher than the latter. Then the specific noise level of the former is lower than that of the latter over the wide flow rate. Therefore, the centrifugal fan with inducer is superior to that without inducer. We predicted the sound pressure level of the turbulent noise with the help of predicted width of wake and inlet relative velocity. The agreement between the predicted values and measured values of the sound pressure level agreed well in the range about ± 3 dB within the limits of this experiment.
キーワード: Fluid Machine / Centrifugal Fan without Scroll Casing / Turbulent Noise / Inducer / Internal Flow
URI: http://hdl.handle.net/10069/6718
ISSN: 03875016
資料タイプ: Journal Article
原稿種類: publisher
出現コレクション:060 学術雑誌論文

引用URI : http://hdl.handle.net/10069/6718



Valid XHTML 1.0! Copyright © 2006-2015 長崎大学附属図書館 - お問い合わせ Powerd by DSpace