Journal
CHINESE SCIENCE BULLETIN
Volume 59, Issue 14, Pages 1568-1574Publisher
SCIENCE PRESS
DOI: 10.1007/s11434-014-0148-2
Keywords
Supersonic flow; Cavity; Injection; Transverse jet
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Funding
- Fok Ying Tung Education Foundation [131055]
- Jieqing Fund of the National University of Defense Technology [CJ13-01-01]
- Fund of Outstanding Doctoral Dissertation from the Education Ministry of China [201258]
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The study has evaluated the coherent structures and the velocity field of gaseous transverse jet upstream of a scramjet flameholder in a supersonic turbulent flow. The high spatiotemporal resolution coherent structures of the jet plume/wakes and the cavity shear layer were obtained by utilizing the nanoparticle-based planar laser scattering technique. Compared to the no upstream injection case, the cavity shear layer downstream of the jet shows significant mass exchange with mainstream. The particle image velocimetry velocity field and the velocity profiles demonstrated that the interaction intensity of the cavity shear layer with the upstream injection is further enhanced as the injection stagnation pressure increases.
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