Bu-Kyeng. Sung, Jeong-Yeol. Choi

DOI Number XXX-YYY-ZZZ

Conference Number HiSST-2022-143

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

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In Categories: 1.Events, HiSST 2022, Propulsion Systems and Components
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