Monte Carlo simulation of the effect of “hot” atoms on active species kinetics in combustible mixtures excited by high-voltage pulsed discharges

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• 作者：Nickolay L. Aleksandrov^a ; ^{nick_aleksandrov@mail.ru} ; ^{nick_aleksandrov@hotmail.com} ; Alexander A. Ponomarev^a ; ^b ; Andrey Yu. Starikovskiy^c
• 关键词：Monte Carlo simulation ; Atom energy degradation ; Active species production ; High-voltage pulsed discharge
• 刊名：Combustion and Flame
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：176
• 期：Complete
• 页码：181-190
• 全文大小：3545 K
• 卷排序：176

文摘

The energy degradation of fast H and O atoms in H2:O2, CH4:O2 and CH4:air mixtures is studied using Monte Carlo simulations, taking into account elastic collisions and chemical reactions. Based on the simulated results, the effect of high-energy atoms on the amount and composition of chemically active species produced in high-voltage pulsed discharges is estimated. The obtained results are used to consider the contribution of “hot” atom production to ignition and oxidation of fuel in combustible mixtures excited by nonequilibrium plasmas. It is shown that the presence of high-energy atoms leads to a decrease in the specific deposited energy required for plasma-assisted ignition and an increase in the density of products of plasma-assisted oxidation at gas room temperature.