Abstract: The mixing and combustion of hydrocarbon(methane) in supersonic flow were investigated numerically by using Reynolds average equations. The turbulent model of Baldwin Lomax algebraic eddy viscosity and the chemical models of implicit treatment of chemical source term were adopted. Numerical results were analysed and compared with one of hydrogen fuel.The results show that the chemical model established is reasonable and the numerical method is reliable. The hydrocarbon fuel is a prospective fuel in supersonic combustion flow.

Key words: Hydrocarbon fuel;Methane;Supersonic combustion;Numerical simulation

摘要： 采用雷诺平均Ｎ－Ｓ方程对碳氢燃料甲烷（ＣＨ４） 在超声速流动中混合燃烧过程进行了数值研究， 提出了简化的甲烷燃烧的反应机理及反应动力学模型， 建立了Ｂａｌｄｗ ｉｎ－Ｌｏｍ ａｘ 代数涡粘性湍流模型， 采用了高精度的ＴＶＤ隐式格式和化学源项隐式解法， 计算结果和氢气／空气超燃的计算结果进行了比较， 表明所采用的反应机理及计算模型合理， 算法可行， 就算例结果而言，碳氢化合物作为一种超燃燃料有其独特的优势， 值得进一步深入研究

关键词: 烃类燃料;甲烷;超音速燃烧;数值仿真