フルテキストURL TransJSASS_12_85.pdf
著者 Kouchi, Toshinori| Oka, Yoshinori| Masuya, Goro| Yanase, Shinichiro|
抄録 A combined stereoscopic particle image velocimetry (PIV) and acetone planar laser-induced fluorescence (PLIF) measurement system was developed to investigate turbulent mixing of a jet into a supersonic flow. The measurement was performed using a supersonic wind tunnel. Air was injected perpendicular into a Mach 2 freestream with a jet-to-freestream momentum ratio of 2.2. The system successfully measured the molar concentration of the jet using PLIF and the velocity in the flow-field using PIV simultaneously. These data yielded turbulent eddy diffusive flux that is a product of fluctuating velocity (v') and concentration (c'). The eddy flux of the streamwise component (c'u') was negative, and that of the heightwise component (c'v') was positive in the outer jet boundary region. Large-scale structures were periodically generated in the outer jet boundary and convected downstream. This large-scale motion induced negative c'u' and positive c'v' in the outer jet boundary. In the inner region of the jet, the air entrained by the counter-rotating vortices induced a positive v' and negative c' region, resulting in negative c'v'.
キーワード Advanced Laser Diagnostics Turbulent Mixing Turbulent Eddy Diffusive Flux Supersonic Combustor Scramjet
発行日 2014-12-03
出版物タイトル Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan
12巻
APISAT-2013号
出版者 The Japan Society for Aeronautical and Space Sciences
開始ページ a85
終了ページ a92
ISSN 1884-0485
資料タイプ 学術雑誌論文
言語 English
OAI-PMH Set 岡山大学
論文のバージョン publisher
DOI 10.2322/tastj.12.a85
関連URL isVersionOf https://doi.org/10.2322/tastj.12.a85