Relation between injection conditions and flowfield in scramjet combustors

Hironori Kitadani, Masaya Umemoto, Yoshihiko Zamma, Goro Masuya, Sadatake Tomioka, Muneo Izumikawa

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

The pre-ignition phase flow-field in a supersonic combustor with perpendicular injectors behind a backward-facing step was simulated with cold airflow and inert gas injection. The effects of injector configuration on pressure and injectant concentration in the recirculation region between the step and the injectors were investigated. The diameter and spacing of injectors were changed, while distance between the step and the injectors was fixed. The pressure in the recirculation region was found to be almost uniform and its values with different configurations were well correlated with the momentum ratio of the injectant to the mainstream. This ratio took the dynamic pressure ratio, the diameter, and the spacing into account. However, the injectant concentration in the recirculation region was not as uniform as the pressure, and did not show a correlation with the momentum ratio.

Original languageEnglish
Publication statusPublished - 1998 Jan 1
Event34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998 - Cleveland, United States
Duration: 1998 Jul 131998 Jul 15

Other

Other34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998
CountryUnited States
CityCleveland
Period98/7/1398/7/15

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering
  • Control and Systems Engineering
  • Aerospace Engineering

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  • Cite this

    Kitadani, H., Umemoto, M., Zamma, Y., Masuya, G., Tomioka, S., & Izumikawa, M. (1998). Relation between injection conditions and flowfield in scramjet combustors. Paper presented at 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, 1998, Cleveland, United States.