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回転する単独平板翼の後流に関する研究 : 第2報, 迎え角が小さい場合の流動様相に与える先端すきまの影響


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Title: 回転する単独平板翼の後流に関する研究 : 第2報, 迎え角が小さい場合の流動様相に与える先端すきまの影響
Other Titles: Experimental Study on the Characteristics of the Near Wake of a Rotating Flat Plate : 2nd Report, Influence of the Tip Clearance Flow with a Small Attack Angle
Authors: 深野, 徹 / 福原, 稔 / 松尾, 哲 / 林, 秀千人
Authors (alternative): Fukahori, Tohru / Fukuhara, Minoru / Matsuo, Satoru / Hayashi, Hidechito
Issue Date: 25-Mar-1991
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, 57(535), pp.891-897; 1991
Abstract: We have experimentally investigated the influence of the tip clearance between a flat-plate-type blade and a duct surface on the flow characteristics around a single rotating blade. The setting angle of the blade was limited within the range where the leading edge separation did not occur over the whole blade span. The local attack angle of the main flow to the blade became smaller toward the tip; the leading edge separation, however, began near the blade tip. The separated zone gradually extended toward the boss of the rotor as the blade setting angle became larger. This is due to the fact that the low-energy fluid in the dead flow region of the wake of the blade is accumulated near the blade tip and it causes the leading edge separation there. A typical periodic fluctuation of the wake flow due to Karman vortex shedding from the trailing edge of the blade was observed in the intermediate region of the blade at any time if the reattached main flow did not separate up to the trailing edge on the suction surface of the blade.
Keywords: Fluid Machinery / Wake / Vortex / Separation / Tip Clearance / Blower / Aerodynamic Acoustics / Noise
URI: http://hdl.handle.net/10069/22743
ISSN: 03875016
Relational Links: http://ci.nii.ac.jp/naid/110002389542/
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/10069/22743

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