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Title :スロート近傍における境界層のパッシブコントロールが遷音速ディフューザに及ぼす影響
Title alternative :Effects of a Passive Control Boundary Layer around the Throat on a Transonic Diffuser
Authors :屋我, 実
永井, 實
芳賀, 剛
富田, 教夫
宮良, 透
Authors alternative :Yaga, Minoru
Nagai, Minoru
Haga, Tsuyoshi
Tomita, Norio
Miyara, Tooru
Issue Date :25-Mar-1996
Abstract :The effects of a passive control boundary layer applied around the throat on a transonic diffuser were investigated experimentally by wall static pressure measurements and by schlieren optical observations. The experiments were conducted using three kinds of the diffuser walls, one was a solid wall and the other two were porous with a 30 mm or 50 mm-long cavity underneath enabling the flow around the shock wave to circulate through the porous wall. The results show that the Mach waves normal to the flow were observed when diffusers were almost choked and that the pressure fluctuations in a transonic diffuser were greatly reduced by passive control. According to the frequency analysis, the frequency range attenuated by passive control is between about 700 Hz and l kHz regardless of the length of the cavities.
Type Local :雑誌掲載論文
ISSN :0387-5016
Publisher :日本機械学会
URI :http://hdl.handle.net/20.500.12000/359
Citation :日本機械学会論文集. B編 = Transactions of the Japan Society of Mechanical Engineers. B Vol.62 no.595 p.133 -138
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Engineering)

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