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基于路径通量分析,以预选组分为基础,通过计算预选组分直接参与,及第二代、第三代间接参与的所有生成反应与消耗反应中其他组分相对于预选组分的路径通量之和,建立了一种新型化学机理简化方法。用该三代路径通量分析简化法对甲烷燃烧机理进行了简化,计算结果与详细化学机理、二代路径通量分析简化法简化机理进行了对比,证明了三代路径通量分析简化法具有更高的简化精度。对特定工况下三代路径通量分析法与二代路径通量分析法简化精度的对比,证明在着火延迟时间较小时三代路径通量分析法简化精度更高。
Based on the path flux analysis, the preselected components are directly involved in the calculation of the preselected components, and the pathways of all the other components in the reaction and consumption reactions indirectly related to the preselected components indirectly participating in the second generation and the third generation Quantity and sum up, a new simplified method of chemical mechanism was established. The three-path flux simplification method is used to simplify the combustion mechanism of methane. The calculated results are compared with the detailed chemical mechanism and simplified mechanism of the second-generation path flux analysis simplified method. It is proved that the three-generation path flux simplification method has a higher Simplified precision. Comparing the simplification accuracy of the third-generation path flux analysis and the second-generation path flux analysis method in a specific working condition, it is proved that the simplified generation accuracy of the third generation path flux analysis method is higher when the ignition delay time is smaller.