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遠心羽根車の羽根先端すきまに基づく二次流れ : 続報,二次流れとすべり係数の関係


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Title: 遠心羽根車の羽根先端すきまに基づく二次流れ : 続報,二次流れとすべり係数の関係
Other Titles: Secondary Flow due to the Tip Clearance at the Exit of Centrifugal Impellers : 2nd Report, Relationship between secondary flow and slip coefficient
Authors: 石田, 正弘 / 妹尾, 泰利 / 植木, 弘信
Authors (alternative): Ishida, Masahiro / Senoo, Yasutoshi / Ueki, Hironobu
Issue Date: 25-Jul-1989
Publisher: 日本機械学会
Citation: 日本機械学會論文集. B編 55(515) p.1917-1921, 1989
Abstract: The velocity distributions measured at the exit of two different types of unshrouded centrifugal impellers respectively under four different tip clearance conditions were reexamined with respect to the shroud wall surface. By increasing the tip clearance, the hub-to-shroud velocity distribution was hardly changed at the exit of the radial blade impeller, by contrast, the relative flow angle was reduced significantly and monotonously in the backward-leaning blade impeller. The change in input power due to the tip clearance was clearly related to the change of flow pattern at the exit of the impeller due to the secondary flow, which must be induced by the component, normal to the blade, of the shear force to support the fluid in the clearance space against the pressure gradient in the meriodional plane without blades.
Keywords: Fluid Machine / Centrifugal Impeller / Tip Clearance / Leakage / Secondary Flow / Slip Coefficient
URI: http://hdl.handle.net/10069/6736
ISSN: 03875016
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/6736

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