Effect of vent mixer to mixing characteristics in supersonic flow

Chae Hyoung Kim, In Seuck Jeung, Byungil Choi, Toshinori Kouchi, Goro Masuya

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

Abstract

A Mach 2 hydrogen - air supersonic combustor model with no diffuser was designed and operated in atmospheric inflow condition. A new supersonic mixer, which was vent slot mixer (VSM), was developed and fabricated to use as the device of the fuel-air mixing. At low enthalpy inflow condition, a plasma jet torch was used as the igniter and the flame-holder. An isolator was located between the nozzle and the combustor. In supersonic combustion, the VSM had an effect to increase the mixing efficiency compared with the step mixer. While the combustion pressure was increased, the combustion mode was changed from unstable supersonic combustion to dual-mode transition. When the unstable flow of shock train affected the combustor inlet, the VSM was showed that the combustion stability was slightly sustained when compared with the case ofthe step mixer.

Original languageEnglish
Title of host publication28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
Pages2864-2872
Number of pages9
Publication statusPublished - Dec 1 2012
Externally publishedYes
Event28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012 - Brisbane, Australia
Duration: Sep 23 2012Sep 28 2012

Publication series

Name28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
Volume4

Other

Other28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012
CountryAustralia
CityBrisbane
Period9/23/129/28/12

Keywords

  • Supersonic mixing
  • Supersonicflow
  • Thermal choking
  • Vent mixer

ASJC Scopus subject areas

  • Aerospace Engineering
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Materials Science(all)

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  • Cite this

    Kim, C. H., Jeung, I. S., Choi, B., Kouchi, T., & Masuya, G. (2012). Effect of vent mixer to mixing characteristics in supersonic flow. In 28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012 (pp. 2864-2872). (28th Congress of the International Council of the Aeronautical Sciences 2012, ICAS 2012; Vol. 4).