Abstract

The ignition of methane–air mixtures with additives of ClF₅, ClF₃, OF₂, and H₂O₂ (additive content in the mixtures \(\le\)1%) is studied by numerical simulation. The ignition temperature of the mixtures is determined as a function of the initial pressure and additive content. It is shown that the introduction of the additives into the mixture leads to a significant decrease in the ignition temperature due to the acceleration of the formation of reactive species and intensification of the chain mechanism of the process. Of the additives considered, chlorine pentafluoride is the most effective additive, and hydrogen peroxide is the least effective one.

中文翻译：

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分子添加剂对甲烷-空气混合物点火的影响

摘要

通过数值模拟研究了掺有ClF ₅，ClF ₃，OF ₂和H ₂ O ₂（混合物中添加剂的含量为 （％））的甲烷-空气混合物的着火。确定混合物的着火温度是初始压力和添加剂含量的函数。结果表明，由于加速了反应性物质的形成并增强了该过程的链机理，将添加剂引入混合物中导致着火温度显着降低。在所考虑的添加剂中，五氟化氯是最有效的添加剂，而过氧化氢是最无效的添加剂。