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本文使用了详细化学反应动力学机理计算模拟了混合有乙醇及典型自由基引导的甲烷预混火焰结构。该反应机理由Marinov研究组研究发表,包含有56个组分以及372个反应。本文的计算使用了CHEMKIN-3以及预混火焰代码,热力学及输运部分的计算基于Sandia国家实验室和Marinov研究室发布的数据库。火焰结构中主要产物的变化,关键中间产物和次要组分的计算结果显示加入乙醇和自由基都可以减少着火延迟。本文计算了三种不同条件下的火焰结构,分别为预混CH4/O2/N2火焰;预混甲烷/乙醇火焰;和加入引导自由基在甲烷/乙醇混合燃料中。此外还有含有自由基的甲烷火焰和加入乙醇的甲烷火焰比较。
In this paper, a detailed chemical reaction kinetic mechanism was used to simulate the premixed methane flame mixed with ethanol and typical free radicals. The reaction mechanism was published by the Marinov Study Group and contains 56 components and 372 reactions. The calculations for this article used CHEMKIN-3 and the premixed flame code, and the calculations for thermodynamics and transport were based on the data published by the Sandia National Laboratory and the Marinov Laboratory. The changes of the main products in the flame structure, the calculation of the key intermediates and the minor components, show that the addition of ethanol and free radicals can reduce the ignition delay. In this paper, the flame structures under three different conditions were calculated, which are pre-mixed CH4 / O2 / N2 flame, pre-mixed methane / ethanol flame, and guided free radicals in methane / ethanol mixed fuel. In addition, methane-containing flames containing free radicals are compared with methane flames added to ethanol.