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低圧軸流送風機の騒音に与える翼先端すきまの影響 : すきま内に設置したリングの幅と位置および翼先端の形状による差異

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Title: 低圧軸流送風機の騒音に与える翼先端すきまの影響 : すきま内に設置したリングの幅と位置および翼先端の形状による差異
Other Titles: Effects of Tip Clearance on the Noise Generated from Low Pressure Axial Flow fans : Difference Caused by the Width and Location of a Ring Set in the Tip Clearance and the Blade Tip Profile
Authors: 児玉, 好雄 / 深野, 徹
Authors (alternative): Kodama, Yoshio / Fukano, Tohru
Issue Date: 25-Mar-1986
Publisher: 日本機械学会
Citation: 日本機械学會論文集. B編 52(475) p.1316-1324 1986
Abstract: The effect of the width and the location of a ring set in the clearance between a duct inner wall and a blade tip and the profile of a blade tip on fan noise are experimentally investigated by using three rings of different widths and four impellers with different tip geometry. The results are summarized as follows : A considerable amount of noise reduction can be expected by setting a ring within a tip clearance, when its initial gap is rather large. Both the noise and the aerodynamic characteristics at the maximum efficiency point are better in the case with a larger gap on the leading edge side than on the trailing edge side. In the lower flow rate range, however, the fan with a smaller tip clearance on the leading edge side is superior.
Keywords: Fluid Machine / Sound / Fan Noise / Axial Flow Fan / Tip Clearance / Blade Tip Profile
URI: http://hdl.handle.net/10069/6724
ISSN: 03875016
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/6724

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