本文重点关注预测层流火焰速度和反应中关键组分的演变过程,采用一种实用的思路构建了一个的异辛烷化学动力学骨架模型,包含32种组分和111个反应.基于骨架模型的构建目标,将异辛烷的燃烧过程考虑为以下两个部分:一部分是详细的小分子机理,它作为整个机理的“内核”,详尽地描述了着火以后的反应过程和特性;另一部分是通过耦合“内核”来专门描述和控制着火特性的骨架模型.新的骨架模型分别采用激波管、喷射搅拌反应器、流动反应器、层流火焰速度和HCCI发动机进行了验证,均显示出很好的性能.
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