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采用准一维流动模型、轴对称方程、三维数值模拟方法结合13组分、32反应氢燃料反应机理计算了“等直段+扩张段”燃烧室内超声速燃烧问题.结果表明准一维流动模型与三维数值模拟方法的计算结果反应了主要气动参数变化规律;除预燃激波串区域外,计算数据与试验数据吻合良好;准一维流动模型计算快速、适应性强;三维数值模拟方法给出了详细流场细节,所需计算时间长.针对两种模型特点,在超燃燃烧室设计过程中应有机结合协同工作.
The quasi-one-dimensional flow model, the axisymmetric equation and the three-dimensional numerical simulation method were used to calculate the supersonic combustion in the “straight section + extended section” combustor with 13 components and 32 reactive hydrogen fuel reaction mechanism. The results show that quasi-one-dimensional flow The calculation results of the model and the three-dimensional numerical simulation method reflect the variation rules of the main aerodynamic parameters. The calculated data are in good agreement with the experimental data except for the region of the pre-ignition shock train. The quasi-one-dimensional flow model is fast and adaptable. The 3D numerical simulation method The details of the flow field are given, and the calculation time is long.According to the characteristics of the two models, the combinatorial work should be organically combined in the design of the super-combustion chamber.