A Study on Performance Comparison of Integrated Aerodynamic-Ramp-Injector/ Gas-Portfire Flame Holder with Cavity

Abstract:

Experimental study of an integrated aerodynamic-ramp-injector /gas-portfire (aero-ramp/G-P) has been conducted in a hydrogen-fueled scramjet combustor. The aero-ramp injectors consisted of four flush-walled holes, arranged to induce vorticular motion and enhance mixing. For comparison, a recessed cavity with four low downstream-angled circular injector holes was also examined. The combustor models were investigated experimentally using the scramjet direct connected test facility at the Beihang University. The facility can deliver a continuous supersonic flow of Mach number 2 with a total temperature of 1200K. The hot experimental results showed that the combustion efficiency and air specific impulse of aero-ramp/G-P are 85% and 35s while the corresponding values of cavity are 92% and 34s. These results justify the feasibility of aero-ramp/G-P flame holder.

• Periodical: Applied Mechanics and Materials (Volume 390)
• Pages: 8-11
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.390.8
• Online since: August 2013
• Authors: Bao Xi Wei, Qiang Gang, Yan Zhang, Rong Jian Liu, Liang Tian, Xu Xu
• Keywords: Aero-Ramp, Cavity, Gas-Portfire, Performance Comparison, Scramjet

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