Large Eddy Simulation of the flame propagation process in an ethylene fueled scramjet combustor in a supersonic flow

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

Large Eddy Simulation (LES) was employed to investigate the flow field characteristics in an ethylene fueled scramjet combustor with a rearwall-expansion cavity in both non-reaction and reacting flows. The numerical solver was first validated against experiments and the numerical results were shown in reasonably good agreement with the available experimental data. Characteristics of the flow field under different combined fuel injection schemes were then studied. It was found thatfor the flame stabilizationprocess, applying the cavity direct injection on the cavity leading edge could improve the combustion process outside the cavity effectively witha fast combustion rate achieved in the region downstream the cavity. In contrast, applying the cavity direct injection on the cavity rear wall is more suitable for improving the combustion process inside the cavity and a more evenly distributed flame would be stabilized in the entire combustor. However, the combustion rate downstream the cavity will be slower. For the rearwall-expansion cavity, both the non-reaction and reacting processes could be improved by applying the combined fuel injection scheme.

Details

Authors
Organisations
External organisations
  • National University of Defense Technology
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering
Original languageEnglish
Title of host publication21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
ISBN (Print)9781624104633
Publication statusPublished - 2017
Publication categoryResearch
Peer-reviewedYes
Event21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017 - Xiamen, China
Duration: 2017 Mar 62017 Mar 9

Conference

Conference21st AIAA International Space Planes and Hypersonics Technologies Conference, Hypersonics 2017
CountryChina
CityXiamen
Period2017/03/062017/03/09