TY - JOUR
T1 - Measurement of vortices and shock waves produced by ramp and twin jets
AU - Koike, Shunsuke
AU - Suzuki, Kentaro
AU - Kitamura, Eijiro
AU - Hirota, Mitsutomo
AU - Takita, Kenichi
AU - Masuya, Goro
AU - Matsumoto, Masashi
N1 - Funding Information:
The results were visualized with the visualizing software POST KUN developed by Fujii Laboratory of University of Tokyo. This work was supported by the Ministry of Education, Culture, Sports, Science, and Technology (Grant in Aid for Scientific Research (A) (2) 15206090) and supported by Research Fellowships of the Japan Society for the Promotion of Science through Grant 17004966.
PY - 2006
Y1 - 2006
N2 - Three-dimensional velocity distributions produced by a ramp injector in a Mach 2.35 airstream were measured with particle image velocimetry. Two jets were injected from the base of the ramp at Mach 2.0. Streamwise vorticity distributions were deduced from the velocity data, and their influence on the mixing of the twin jets was investigated. When the jets were not injected, a pair of counter-rotating vortices was observed behind the ramp. In contrast, two pairs of streamwise vortices could be observed when the jets were injected. The outer pair rotated in the same direction as the one produced by the ramp without injection, and their strength was intensified by the jets. The inner pair was weaker and rotated in a direction opposite to the outer pair.
AB - Three-dimensional velocity distributions produced by a ramp injector in a Mach 2.35 airstream were measured with particle image velocimetry. Two jets were injected from the base of the ramp at Mach 2.0. Streamwise vorticity distributions were deduced from the velocity data, and their influence on the mixing of the twin jets was investigated. When the jets were not injected, a pair of counter-rotating vortices was observed behind the ramp. In contrast, two pairs of streamwise vortices could be observed when the jets were injected. The outer pair rotated in the same direction as the one produced by the ramp without injection, and their strength was intensified by the jets. The inner pair was weaker and rotated in a direction opposite to the outer pair.
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U2 - 10.2514/1.19330
DO - 10.2514/1.19330
M3 - Article
AN - SCOPUS:33749495037
SN - 0748-4658
VL - 22
SP - 1059
EP - 1067
JO - Journal of Propulsion and Power
JF - Journal of Propulsion and Power
IS - 5
ER -