Combined Stereo-PIV and PLIF Measurements of Transverse Injection in Mach 2 Supersonic Flow

• KOUCHI Toshinori

  Department of Mechanical and System Engineering, Okayama University

• OKA Yoshinori

  Department of Aerospace Engineering, Tohoku University

• MASUYA Goro

  Department of Aerospace Engineering, Tohoku University

• YANASE Shinichiro

  Department of Mechanical and System Engineering, Okayama University

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'.

収録刊行物

• TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN

  TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 12 (APISAT-2013), a85-a92, 2014

  一般社団法人 日本航空宇宙学会

キーワード

• Advanced Laser Diagnostics
• Turbulent Mixing
• Turbulent Eddy Diffusive Flux
• Supersonic Combustor
• Scramjet

詳細情報

• CRID: 1390001205319199232
• NII論文ID: 130004706666
• NII論文ID: 120006491688
• DOI: 10.2322/tastj.12.a85
• ISSN: 18840485
• Web Site: https://ousar.lib.okayama-u.ac.jp/56133
• Web Site: https://www.jstage.jst.go.jp/article/tastj/12/APISAT-2013/12_TJSAS-D-14-00005/_pdf
• 本文言語コード: en
• データソース種別:
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  • IRDB
  • Crossref
  • CiNii Articles
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