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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
Effects of a Passive Control Boundary Layer around the Throat on a Transonic Diffuser
屋我, 実
永井, 實
芳賀, 剛
富田, 教夫
宮良, 透
Yaga, Minoru
Nagai, Minoru
Haga, Tsuyoshi
Tomita, Norio
Miyara, Tooru
Compressible Flow
Shock Wave
Passive Control
Boundary Layer
Transonic Diffuser
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.
論文
http://purl.org/coar/resource_type/c_6501
日本機械学会
1996-03-25
VoR
http://hdl.handle.net/20.500.12000/359
0387-5016
AN00187441
日本機械学会論文集. B編
Transactions of the Japan Society of Mechanical Engineers. B
595
62
138
133
jpn
open access
Copyright (c) 1996 日本機械学会