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ID 56134
タイトル(別表記)
Effects of Upstream Disturbances on Supersonic Flowfield with Transverse Injection
フルテキストURL
著者
河内 俊憲 岡山大学大学院自然科学研究科
浦本 翔平 東北大学大学院工学研究科
升谷 五郎 東北大学大学院工学研究科
抄録
Effects of upstream disturbances on a transverse jet into Mach 2 supersonic flow were investigated by using single-time two-point spatial correlations of fluctuating velocities in the flowfield. The fluctuating velocity was measured by stereoscopic PIV. We categorized the upstream disturbances into two factors: incoming boundary layer on the injection port and weak oblique shock wave impinging ahead of the injection port. The velocity fluctuations in the upstream boundary layer had a long positive correlation region in the boundary layer. This is the evidence that very large-scale motion (VLSM) existed in the boundary layer developed on our test section. The correlation region bifurcated into the regions along the bow shock wave and the outer jet boundary. The correlation length was 10-hold longer than the boundary layer thickness. Fluctuation of the weak shock wave was induced by VLSM developed on the opposite wall to the injection wall. The velocity fluctuation due to the weak shock wave also had a long positive correlation region along the oblique shock wave. However, it had no correlation with the jet.
キーワード
Scramjet Combustor
Wall Injection
Spatial Correlation
Turbulence
Very Large Scale Motion
Stereoscopic PIV
発行日
2016-08-05
出版物タイトル
日本航空宇宙学会論文集
64巻
4号
出版者
日本航空宇宙学会
開始ページ
244
終了ページ
252
ISSN
13446460
NCID
AA11307372
資料タイプ
学術雑誌論文
言語
Japanese
OAI-PMH Set
岡山大学
論文のバージョン
publisher
DOI
関連URL
isVersionOf https://doi.org/10.2322/jjsass.64.244