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多翼ラジアルファンの流体力学特性と騒音特性に関する実験的研究(流体力学的特性および騒音特性に及ぼす羽根車内径,羽根枚数の影響)


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Title: 多翼ラジアルファンの流体力学特性と騒音特性に関する実験的研究(流体力学的特性および騒音特性に及ぼす羽根車内径,羽根枚数の影響)
Other Titles: Characteristics of Fluid Dynamics and Noise of a Multiblade Radial Fan : Effects of inner diameter and the number of blades on the characteristics of fluid dynamics and noise
Authors: 新原, 登 / 児玉, 好雄 / 林, 秀千人 / 畠山, 真
Authors (alternative): Shimbara, Noboru / Kodama, Yoshio / Hayashi, Hidechito / Hatakeyama, Makoto
Issue Date: 25-Oct-1996
Publisher: 日本機械学会
Citation: 日本機械学會論文集. B編 62(602) p.3642-3648 1996
Abstract: Characteristics of fluid dynamics and noise of a multiblade radial fan have been experimentally investigated with respect to the effects of two parameters: inner diameter and the number of blades. The inner diameter D_i of 58mm gave the highest fan efficiency and pressure coefficient. Up to the critical number of blades B of 120, the greater the number of blades used the higher the fan efficiency and pressure coefficient. The optimal number of blades was found to be around 120 since the characteristics of fluid dynamics remain at a maximum even if a higher number of blades is used. Blade passage frequency tone decreases as the number of blades is increased. Sound pressure level and specific noise level are reduced as the number of blades is increased up to the critical number of blades but do not decrease further when a higher number of blades are used.
Keywords: Turbomachinery / Blower / Radial Fan / Fan Noise / Blade Passage Frequency Tone / Turbulent Noise / Specific Noise Level
URI: http://hdl.handle.net/10069/6713
ISSN: 03875016
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/6713

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