碳氢燃料超声速燃烧的火焰面模型模拟  

Numerical Simulation of Hydrocarbon Fuel Supersonic Combustion Using Flamelet Modeling

作　　者：牛东圣[1] 侯凌云[1] 

机构地区：[1]清华大学航天航空学院,北京100084

出　　处：《工程热物理学报》2013年第10期1986-1989,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50306011);国家教育部留学回国人员科研启动基金资助项目

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κ-ωSST湍流模型、扩散火焰面模型和乙烯(C_2H_4)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。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.

关 键 词：火焰面模型 超燃冲压发动机 湍流燃烧 碳氢燃料 数值模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]