Numerical investigation on burned gas backflow in liquid fuel purge method

Hiroaki Watanabe, Akiko Matsuo, Ken Matsuoka, Jiro Kasahara

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

4 Citations (Scopus)

Abstract

The flowfield in liquid fuel purge method and the effect of parameters on purging process are analyzed using one-dimensional numerical simulation. The combustor length, total pressure of oxidizer, the width of propellant region from the ignition point to the upstream side and back pressure are taken as the parameters. The purge process occupies a large part of the entire cycle and the back flow of burned gas which has linear relationship with the time required for the burned gas needs to be suppressed. The maximum back flow distance of burned gas depends on the pressure ratio of burned gas to oxidizer flow and is minimized when the oxidizer flow is choked and the propellant does not exist upstream from the ignition point at the ignition time. For realizing the high frequency operation, it is desired to make the flow choked by increasing total pressure of oxidizer and decreasing back pressure and to shorten the width of propellant region upstream from the ignition point at the ignition time.

Original languageEnglish
Title of host publicationAIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624104473
DOIs
Publication statusPublished - 2017
Event55th AIAA Aerospace Sciences Meeting - Grapevine, United States
Duration: 2017 Jan 92017 Jan 13

Other

Other55th AIAA Aerospace Sciences Meeting
CountryUnited States
CityGrapevine
Period17/1/917/1/13

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ASJC Scopus subject areas

  • Aerospace Engineering

Cite this

Watanabe, H., Matsuo, A., Matsuoka, K., & Kasahara, J. (2017). Numerical investigation on burned gas backflow in liquid fuel purge method. In AIAA SciTech Forum - 55th AIAA Aerospace Sciences Meeting [AIAA 2017-1284] American Institute of Aeronautics and Astronautics Inc.. https://doi.org/10.2514/6.2017-1284