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遠心羽根車翼端すきまによる圧縮機性能の低下


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Title: 遠心羽根車翼端すきまによる圧縮機性能の低下
Other Titles: Deterioration of Compressor Performance due to Tip Clearance of Centrifugal Impellers
Authors: 妹尾, 泰利 / 石田, 正弘
Authors (alternative): Senoo, Yasutoshi / Ishida, Masahiro
Issue Date: 25-Jan-1986
Publisher: 社団法人日本機械学会 / The Japan Society of Mechanical Engineers
Citation: 日本機械学會論文集. B編, 52(473), pp.386-392; 1986
Abstract: The authors' theory on the tip-clearance loss of centrifugal impellers is modified to include variation of gas density in the impeller. Furthermore, a relationship between two empirical parameters in the theory is derived to reduce freedom of adjustment. In order to compare experimental data in the literature with prediction, examination was made regarding accuracy of data and the way to determine the corresponding flow rates at different tip clearances. Fair agreement between data and prediction was observed. These examples demonstrated effect of various parameters on tip clearance loss as follows. The clearance loss of high pressure-ratio compressors is less than that of low pressure-ratio compressors if the tip clearance ratio at the impeller exit is given. The clearance loss becomes smaller as the flow rate is reduced and also at a reduced shaft speed in cases of high pressure-ratio compressors. The equations in the theory clearly show these tendencies.
Keywords: Fluid Machine / Centrifugal Compressor / Tip Clearance, Leakage
URI: http://hdl.handle.net/10069/22731
ISSN: 03875016
Relational Links: http://ci.nii.ac.jp/naid/110002400132/
Rights: 社団法人日本機械学会 / 本文データは学協会の許諾に基づきCiNiiから複製したものである
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/22731

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