TY - GEN
T1 - Measurement of flow field produced by ramp vortices and twin swirl jets
AU - Koike, Shunsuke
AU - Ito, Takashi
AU - Hirose, Keiko
AU - Hirota, Mitsutomo
AU - Takita, Kenichi
AU - Masuya, Goro
PY - 2005/12/21
Y1 - 2005/12/21
N2 - Influence of the interaction between the streamwise vortices produced by a ramp in a supersonic flow and twin swirling jets for the mixing enhancement was experimentally investigated. Nominal Mach number of the main air stream and the twin swirl jets were 2.35 and 2.0, respectively. The directions of swirls were opposite and same with the streamwise vortices produced by the ramp. Three dimensional velocity distributions were measured using a Particle Image Velocimetry (PIV). Mie scattering images of the particles seeded in the injectant on cross section of the duct were recorded. In the opposite swirl case, strong outward flow was observed at the interaction point of the swirl in the jet and the ramp vortex. Mie-scattering images showed the difference of the injectant trajectories with the swirling condition. In the opposite swirl case, the injectant spread more widely and the injectant attached on the wall most slowly in the three cases.
AB - Influence of the interaction between the streamwise vortices produced by a ramp in a supersonic flow and twin swirling jets for the mixing enhancement was experimentally investigated. Nominal Mach number of the main air stream and the twin swirl jets were 2.35 and 2.0, respectively. The directions of swirls were opposite and same with the streamwise vortices produced by the ramp. Three dimensional velocity distributions were measured using a Particle Image Velocimetry (PIV). Mie scattering images of the particles seeded in the injectant on cross section of the duct were recorded. In the opposite swirl case, strong outward flow was observed at the interaction point of the swirl in the jet and the ramp vortex. Mie-scattering images showed the difference of the injectant trajectories with the swirling condition. In the opposite swirl case, the injectant spread more widely and the injectant attached on the wall most slowly in the three cases.
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M3 - Conference contribution
AN - SCOPUS:29044432246
SN - 1563477297
SN - 9781563477294
T3 - A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference
SP - 917
EP - 926
BT - A Collection of Technical Papers - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference
T2 - 13th AIAA/CIRA International Space Planes and Hypersonic Systems and Technologies Conference
Y2 - 16 May 2005 through 20 May 2005
ER -