Matched pressure injections into a supersonic crossflow through diamond-shaped orifices

Sadatake Tomioka, Toshinori Kouchi, Muneo Izumikawa, Shunsuke Koike, Goro Masuya, Kohshi Hirano, Akiko Matsuo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Matched pressure injection through diamond-shaped injectors was applied to a Mach 2.5 supersonic cross-flow, and penetration and mixing characteristics of the injected plume were experimentally investigated. Both subsonic and supersonic injections were investigated at various injection pressure. The subsonic injection case was utilized to evaluate effective back-pressure to the plume, which was almost the same value to that on a solid wedge surface with identical wedge angle to the injector orifice at designed flow rate for matched pressure condition. With the supersonic injection, the plume floated from the injection wall, and best penetration height was attained. The penetration height increased at over-expanded condition, while maximum mass fraction decay was insensitive to the injection condition. With the subsonic injection, the plume shaped like a pillar, leaving certain fraction of the injectant within the boundary layer region. The penetration height as well as the maximum mass fraction decay was found to be insensitive to the injection pressure.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Pages3909-3918
Number of pages10
Publication statusPublished - 2007 Dec 10
Event43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference - Cincinnati, OH, United States
Duration: 2007 Jul 82007 Jul 11

Publication series

NameCollection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
Volume4

Other

Other43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference
CountryUnited States
CityCincinnati, OH
Period07/7/807/7/11

ASJC Scopus subject areas

  • Space and Planetary Science

Fingerprint Dive into the research topics of 'Matched pressure injections into a supersonic crossflow through diamond-shaped orifices'. Together they form a unique fingerprint.

  • Cite this

    Tomioka, S., Kouchi, T., Izumikawa, M., Koike, S., Masuya, G., Hirano, K., & Matsuo, A. (2007). Matched pressure injections into a supersonic crossflow through diamond-shaped orifices. In Collection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference (pp. 3909-3918). (Collection of Technical Papers - 43rd AIAA/ASME/SAE/ASEE Joint Propulsion Conference; Vol. 4).