Measurement of vortices and shock waves produced by ramp and twin jets

Shunsuke Koike, Kentaro Suzuki, Eijiro Kitamura, Mitsutomo Hirota, Kenichi Takita, Goro Masuya, Masashi Matsumoto

Research output: Contribution to conferencePaperpeer-review

2 Citations (Scopus)


The influence of the streamwize vortices produced by a ramp in a supersonic flow on the mixing of twin jets injected from the base of base was experimentally investigated. Nominal Mach numbers of the main airstream and the twin jets were 235 and 2.0, respectively. Three dimensional velocity distributions near the ramp with and without injection were measured by Particle Image Velocimetry (PTV). When the jets were not injected, a pair of counter rotating vortices was observed behind the ramp. On the other hand, two pairs of streamwise vortices could be seen with injection. The outer pair rotated in the same direction as one produced by the ramp without injection and its strength was intensified by the injection. The inner pair was weaker and had the opposite direction in comparison to the outer one.

Original languageEnglish
Publication statusPublished - 2004 Dec 1
Event40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit - Fort Lauderdale, FL, United States
Duration: 2004 Jul 112004 Jul 14


Conference40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Country/TerritoryUnited States
CityFort Lauderdale, FL

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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