High resolution numerical study on the supersonic turbulent flame structures and dynamics in dual combustion ramjet

Jeong Yeol Choi, Vigor Yang

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

Abstract

Numerical study is carried out to investigate the characteristics of supersonic turbulent combustion in Dual Combustion Ramjet(DCR) engine using a multi-dimensional 5th-order high resolution scheme. Two series of numerical experiment are carried out for the DCR combustors with various divergence angles and the length of the constant area combustor section. Operating conditions are selected by considering the flight conditions. Two different combustion modes are found by the investigation of the results depending on the formation of Mach reflection. It is analyzed that the relation between the turbulent combustion and the formation of the Mach reflection by the variation of scalar dissipation rate. Dynamic characteristics the turbulent supersonic combustion were investigated by the variation of wall pressure compared with other properties. Critical conditions for the combustion stabilization are reasoned from the characteristics of the turbulent combustion. The detailed mechanism of coupling between the compressibility effects and the turbulent combustion is understood as they are supporting with each other, similarly in detonation phenomena.

Original languageEnglish
Title of host publication50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Electronic)9781624103032
DOIs
Publication statusPublished - 2014
Event50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and exhibit 2014 - Cleveland, United States
Duration: 2014 Jul 282014 Jul 30

Publication series

Name50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference 2014

Conference

Conference50th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and exhibit 2014
CountryUnited States
CityCleveland
Period14-07-2814-07-30

All Science Journal Classification (ASJC) codes

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

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