Numerical Study of Shock Train in the Isolator of Scramjet Engine

The isolator of scramjet engine has to separate the combustor from the inlet so that the scramjet can keep working stably. The steady-state flow field structure, the shock train shape and the starting position of the symmetrical model of isolator under different backpressure ratio are obtained by nu...

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Bibliographic Details
Published inIOP conference series. Materials Science and Engineering Vol. 887; no. 1; pp. 12031 - 12036
Main Authors Fang, Jing, Xian Yao, Xiao, Lin Fang, Guan
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2020
Subjects
Combustion chambers
Equilibrium flow
Mathematical models
Simulation
Steady state
Supersonic aircraft
Supersonic combustion ramjet engines
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Summary:The isolator of scramjet engine has to separate the combustor from the inlet so that the scramjet can keep working stably. The steady-state flow field structure, the shock train shape and the starting position of the symmetrical model of isolator under different backpressure ratio are obtained by numerical simulation of commercial software fluent. Using the user-defined function to simulate the pressure fluctuation caused by the irregular heat release in the combustion chamber, the motion of the shock train in the isolation section is obtained. It is found that the start position of the shock train is larger than that of the steady state simulation, which provides a reference for the design of the combustion chamber.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/887/1/012031