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タイトル: チューブラー遠心送風機から発生する干渉騒音の特性
その他のタイトル: Interaction Noise Generated from a Tubular Centrifugal Fan
著者: 林, 秀千人 / 児玉, 好雄 / 淵上, 真一郎 / 深野, 徹
著者(別表記) : Hayashi, Hidechito / Kodama, Yoshio / Fuchigami, Shinnichirou / Fukano, Toru
発行日: 2002年12月
出版者: 日本工業出版
引用: ターボ機械 30(12), p.733-740. 2002
抄録: Discrete frequency noise (DFN) generated from a tubular centrifugal fan was investigated experimentally and theoretically.It was made clear that the DFN is caused by the interaction of the rotor blades with the distorted inlet flow, but not with the stator blades. It is effective for reducing the DFN level that the inlet nozzle is lengthened to the duct diameter and set the honeycomb in it. In the latter case, the DFN level can be reduced almost to the turbulent noise level. The DFN level was theoretically predicted. The prediction shows that the noise source concentrates to the leading edge of the blade. And the characteristic lengths are almost constant for any inlet distortion. The predicted noise level agrees with the experimental results.
キーワード: Noise / Tubular fan / Interaction noise / Inlet distortion
URI: http://hdl.handle.net/10069/7509
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/10069/7509



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