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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
The Reynolds-averaged N-S equation was used to study the mixed combustion process of CH4 in supersonic flow. A simplified methane combustion reaction mechanism and reaction kinetic model were proposed. The Bald-in-Lom ax algebra The eddy viscous turbulence model uses a high-precision TVD implicit scheme and an implicit chemical source term solution. The calculated results are compared with the hydrogen / air scramble calculations. The results show that the proposed reaction mechanism and calculation model are reasonable and the algorithm is feasible , Even as a result of the example, hydrocarbons have their unique advantages as a kind of fuel for super-combustion and deserve further study