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傾斜溝による遠心送風機旋回失速の抑制効果


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Title: 傾斜溝による遠心送風機旋回失速の抑制効果
Other Titles: Effect of Beveled Grooves on Suppression of Rotating Stall in a Centrifugal Blower
Authors: 坂口, 大作 / 石田, 正弘 / 植木, 弘信 / 孫, 自祥
Authors (alternative): Sakaguchi, Daisaku / Ishida, Masahiko / Ueki, Hironobu / Sun, Zixiang
Issue Date: Jul-2000
Citation: 長崎大学工学部研究報告 Vol.30(55) p.131-135, 2000
Abstract: In order to suppress the rotating stall in a vaneless diffuser of a centrifugal blower, straight beveled grooves are distributed circumferentially on the hub-side wall alone at the entry region of the vaneless diffuser. The effect of the groove arrangement on the rotating stall inception was examined experimentally. As a result, it is found that the flow rate of rotating stall inception was decreased by about 10%, however, a small drop in the diffuser pressure recovery followed. And it seems that the unstable flow inception is suppressed by the local recirculation flow formed at the hub-side of the diffuser entry region, which is formed through the groove arrangement.
URI: http://hdl.handle.net/10069/5109
ISSN: 02860902
Type: Departmental Bulletin Paper
Appears in Collections:Volume 30, No. 55

Citable URI : http://hdl.handle.net/10069/5109

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