HOME    About this site    mypage    Japanese    library    university    Feedback

University of the Ryukyus Repository >
Faculty of Engineering >
Bulletin >
Bulletin of the Faculty of Engineering, University of the Ryukyus >
No. 50 (1995/09) >

 
Title :多孔スロートが遷音速ディフューザに及ぼす影響
Title alternative :Effects of Porous Throat on Transonic Diffuser
Authors :屋我, 実
永井, 實
富田, 教夫
芳賀, 剛
宮良, 透
Authors alternative :Yaga, Minoru
Nagai, Minoru
Tomita, Norio
Haga, Tsuyoshi
Miyara, Tooru
Issue Date :Sep-1995
Abstract :The effects of the porous throat on a transonic diffuser were investigated experimentally by wall static pressure measurements and by schlieren optical observations. The porous throat consists of a wall with 126 holes and a cavity underneath it so that the flow around the shock wave can circulate through the porous wall. The results show that no shock wave was observed at 80% of the porous region from the throat and that the pressure fluctuations in the transonic diffuser were greatly reduced by the porous throat. According to the frequency analysis, the frequency range attenuated by the porous region is between about 700 Hz and 1kHz and the frequencies lower than 700 Hz have still remained.
Type Local :紀要論文
ISSN :0389-102X
Publisher :琉球大学工学部
URI :http://hdl.handle.net/20.500.12000/5456
Citation :琉球大学工学部紀要 no.50 p.17 -25
Appears in Collections:No. 50 (1995/09)

Files in This Item:

File Description SizeFormat
No50p17.pdf1043KbAdobe PDFView/Open