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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of the Faculty of Engineering, Nagasaki University > Volume 32, No. 59 >

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 : 羽根車入口・出口角度の影響

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Title: 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 : 羽根車入口・出口角度の影響
Other Titles: Characteristics of Aerodynamics and Noise for Centrifugal Fan without Scroll Casing : Effect of Inlet and Outlet angles
Authors: 林, 秀千人 / 児玉, 好雄 / 荻野, 和郎
Authors (alternative): Hayashi, Hidechito / Kodama, Yoshio / Ogino, Kazuo
Issue Date: Jul-2002
Citation: 長崎大学工学部研究報告 Vol.32(59) p.17-24, 2002
Abstract: The influence of the inlet and outlet angles of the centrifugal fan without scroll casing were investigated in relating to the characteristics of aerodynamics and noise. The following results are obtained. The inlet angle of the impeller, which is estimated by the radial inflow condition, gives the extremely low angle for the inflow condition. The cause is that the leakage flow from the clearance between the front shroud and the bell mouth is very large and has the tangential component of velocity. And we proposed the new charts of the performance on the fan noise. They clearly indicate the effect of the inlet and outlet angles of the impeller to the performance of the fan noise. From the charts, the optimal design parameters and the sensitivity of them to the fan noise can be easily obtained.
URI: http://hdl.handle.net/10069/5206
ISSN: 02860902
Type: Departmental Bulletin Paper
Appears in Collections:Volume 32, No. 59

Citable URI : http://hdl.handle.net/10069/5206

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