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 journalArticlepeer-review

36 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1059-1067
Number of pages9
JournalJournal of Propulsion and Power
Issue number5
Publication statusPublished - 2006
Externally publishedYes

ASJC Scopus subject areas

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science


Dive into the research topics of 'Measurement of vortices and shock waves produced by ramp and twin jets'. Together they form a unique fingerprint.

Cite this