The effects of ozone $$({\hbox {O}}_{3})$$ or nitrogen dioxide $$({\hbox {NO}}_{2})$$ as oxygen atom precursors on the characteristic length-scales of low-temperature chemistry (LTC)-affected detonation propagating in dimethyl $${\hbox {ether}}{-}{\hbox {O}}_{2}{-}{\hbox {CO}}_{2}$$ mixtures were investigated using the Zeldovich–von Neumann–Doring model. The effect of these two additives on the energy release dynamics and chemical kinetics was analyzed. Under some conditions, up to three steps of energy release were observed. Ozone strengthens the LTC which results in a decrease in the induction zone length along with an increase of the energy release rate. The addition of $${\hbox {NO}}_{2}$$ provides chemical pathways which lead to a bypass of the intermediate-temperature chemistry and a decrease in the separation distance between the first and the second steps of energy release. An increase of the energy release rate is also observed for the two first peaks. Among the two additives tested, ozone appears as the most promising to experimentally observe LTC-affected detonation with multi-stage energy release.

中文翻译：

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$${\hbox {DME}}{-}{\hbox {O}}_{2}{-}{\hbox {CO}}_{2}$中氧原子前体添加对LTC影响爆炸的影响$混合物

臭氧 $$({\hbox {O}}_{3})$$ 或二氧化氮 $$({\hbox {NO}}_{2})$$ 作为氧原子前体对特征长度的影响 -受低温化学 (LTC) 影响的爆炸在二甲基 $${\hbox {ether}}{-}{\hbox {O}}_{2}{-}{\hbox {CO}}_{ 2}$$ 混合物使用 Zeldovich-von Neumann-Doring 模型进行研究。分析了这两种添加剂对能量释放动力学和化学动力学的影响。在某些条件下，观察到多达三个步骤的能量释放。臭氧增强了 LTC，导致诱导区长度减少，同时能量释放率增加。$${\hbox {NO}}_{2}$$ 的添加提供了化学途径，导致绕过中温化学并减少能量释放的第一步和第二步之间的分离距离。对于两个第一个峰也观察到能量释放速率的增加。在测试的两种添加剂中，臭氧似乎是最有希望通过多级能量释放实验观察受 LTC 影响的爆炸的。