【摘要】 在分析甲烷 -空气氧化反应动力学过程的基础上 ,采用四步简化机理和两种半详细的化学反应动力学机理-W机理和Y机理 ,对甲烷射流扩散燃烧的组分浓度和温度进行了数值模拟 ,计算结果与实验结果进行了对比分析。其结果表明 ,不同的化学反应机理对甲烷射流扩散燃烧的计算结果有明显影响 ,对其中退化分支链式反应的重要性进行了讨论。更多还原

【Abstract】 Based on the analysis of kinetical process of CH 4 -air oxidation, a numerical modeling of the species concentrations and temperature for CH 4 jet diffusion combustion is made using a four-step reduced mechanism and two semi-detailed chemical kinetical reaction mechanismsW mechanism and Y mechansim The results show that the computation results of CH 4 jet diffusion combustion is apparently affected by the different reaction mechanisms, and the importance of the degenerate-branching chain reactions is discussed更多还原