针对采用单一燃烧机理简化方法的缺陷,本文提出了耦合路径通量分析与敏感性分析的一种新的机理简化方法,并用于甲烷与正庚烷详细燃烧机理的简化.将采用该方法所得到的简化机理与采用路径通量分析方法得到的简化机理分别用于燃烧过程模拟,并与直接采用详细机理的模拟结果进行对比分析,结果表明耦合路径通量分析与敏感性分析机理简化方法可以在保持计算精度的情况下进一步减少机理组分数和基元反应数目.路径通量分析与敏感性分析简化方法的耦合为化学反应流模拟中的大型详细化学机理的简化提供了新的解决方案.
In order to iron out flaws that using single mechanism reduction method,a new mechanism reduction approach that combining paths flux analysis and sensitivity analysis is proposed.And detailed mechanisms of methane and n-heptane are reduced by using this approach.The reduced mechanisms are compared with the mechanisms using paths flux analysis only and detailed mechanisms.The results certify that the using paths flux analysis and sensitivity analysis together can further reduce the number of species and reactions in reduced mechanism and maintain accuracy and that provides a new way for reducing large chemical mechanisms in reaction flow simulation.
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