中文摘要：

针对超声速特征，建立了适合超声速燃烧的扩散火焰面模型。针对某碳氢燃料超声速双燃烧室结构，采用k-ωSST湍流模型、扩散火焰面模型和乙烯（C2H4）的31组分128步化学反应机理对超声速湍流燃烧流场进行了数值模拟。将计算结果与实验数据进行对比，二者吻合良好，在此基础上，分析了各主要参数的分布规律，结果表明火焰面模型完全适用于超声速问题的求解。

英文摘要：

The flamelet model for supersonic turbulent diffusion flames was developed based on the intrinsic feature of supersonic flows. Numerical simulations of the supersonic turbulent combustion flow fields in a hydrocarbon-fueled dual combustor were conducted using the k - w SST turbulence model, the present flamelet model and the ethylene（C2H4） reaction mechanism including 31 species and 128 steps. Good agreement was obtained between numerical results and experimental data. Besides, distribution rules of the main parameters were also analysed. Results indicate that the flamelet model is fully applicable to supersonic combustion modeling.