超燃冲压发动机进气道不起动仿真研究
Unstart Simulation of Scramjet Inlets
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摘要: 对超燃冲压发动机进气道-隔离段进行了二维稳态流场数值模拟,给出了超燃冲压发动机进气道起动到不起动整个过程的数值模拟结果。得到了不同压比下、不同攻角下进气道-隔离段内部流场等压线图,分析了进气道-隔离段壁面静压分布特性,初步给出了进气道不起动状态的判断准则。Abstract: The 2-D internal steady flow of the scramjet inlet-isolator was numerically simulated by the prevailing software,the numerical simulation results of the process from start to unstart in the scramjet inlet were presented.The static pressure contours of the scramjet inlet-isolator under different back pressure and angle of attack were given.The distribution of static pressure of inlet-isolator was analyzed and the unstart judgement criterion was given.
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Key words:
- aerospace propulsion system /
- scramjet /
- inlet /
- unstart /
- judgement criterion
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