正癸烷着火及燃烧的化学动力学模型

正癸烷着火及燃烧的化学动力学模型

姚通;钟北京

【期刊名称】《物理化学学报》

【年(卷),期】2013(000)002

【摘要】构建了一个包含46组分和167反应的描述正癸烷着火与燃烧过程的化学反应动力学机理模型，该机理是在通过路径分析和灵敏度分析对Peters机理(118组分和527反应)进行较大程度简化的基础上，对低温着火和火焰传播速度影响较大的部分基元反应进行修正和改进后得到的。与文献给出的实验结果对比表明，该机理不仅比现有的机理具有较少的组分数和基元反应数，而且能够更准确地预测正癸烷低温和高温条件下的着火延迟时间和火焰传播速度。该机理为进一步实现总包简化机理与计算流体力学(CFD)的耦合计算奠定了基础。%A chemical kinetic model containing 46 species and 167 reactions was developed for the auto-ignition and combustion of n-decane. On the basis of a significant reduction of the mechanism proposed by Peters (118 species and 527 reactions)—where the reduction was achieved using reaction path analysis and a sensitivity analysis—the newly developed mechanism was obtained by correcting and improving some elementary reactions important for auto-ignition at lower temperatures and laminar flame speeds. When compared with experimental results, not only did the mechanism contain fewer species and reactions than other models, it could also predict the auto-ignition delay time at lower and higher temperatures and laminar flame speeds