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NAOSITE : Nagasaki University's Academic Output SITE > Faculty of Engineering > Bulletin > Reports of the Faculty of Engineering, Nagasaki University > Volume 34, No. 63 >

多翼シロッコファンの空力特性に及ぼす混合損失の影響


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Title: 多翼シロッコファンの空力特性に及ぼす混合損失の影響
Other Titles: Influence of the Mixing Losses on the Aerodynamic Characteristics of a Multi-Blade Sirocco Fan
Authors: 佐々木, 壮一 / 児玉, 好雄 / 林, 秀千人 / 大山, 真吾
Authors (alternative): Sasaki, Soichi / Kodama, Yoshio / Hayashi, Hidechito / Ohyama, Shingo
Issue Date: Jul-2004
Citation: 長崎大学工学部研究報告 Vol.34(63) p. 1-8, 2004
Abstract: The nonuniformity flow in the meridional section of a multi-blade sirocco fan has been represented as two domains. In the one domain, the air accompanied with the wake flows out to outside of impeller, and the vortex flow exists in another domain. In this study, the slip factor and the four pressure losses have been estimated. A pressure loss arose at upstream side rather than the measurement point, and other losses were produced by the expansion of the scroll casing, mixing of the wake and the mixing of the vortex flow. As a result of analysis of the internal flow of the fan, it became clear that the aerodynamic characteristics of the fan are influenced of the pressure loss produced in the process in which substantial channel reduced by the vortex flow carries out sudden expansion. When the effect on the mixing losses proposed in this study was applied to the estimate of the total pressure coefficient of the fan, the coefficient was able to be estimated within 6 % errors.
URI: http://hdl.handle.net/10069/15076
ISSN: 02860902
Type: Departmental Bulletin Paper
Appears in Collections:Volume 34, No. 63

Citable URI : http://hdl.handle.net/10069/15076

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