摘要
本文采用详细化学反应机理数值研究了添加不同稀释气体(氦气/氩气/氮气/二氧化碳)对甲烷/空气预混气体点火的影响,比较了氢气/空气/二氧化碳和甲烷/空气/二氧化碳的最小点火能与稀释极限。研究结果表明:稀释气体的热力学效应和火焰动力学效应均会导致最小点火能变大;在添加二氧化碳时,甲烷/空气的稀释极限远低于氢气/空气的稀释极限。
A computational study with detailed chemistry was performed to investigate the effects of diluents（He.Ar,N_2,or CO_2） on the ignition of premixed CH_4/air mixtures.The minimum ignition energies（MIE） and the dilution limits were conducted for H_2/air/CO_2 and CH4 / air / CO_2 mixtures.The results showed that the MIE increases with the dilution ratio due to the thermal and flame-dynamic effects of dilution.Moreover,the CO_2 dilution limit of premixed CH_4/air mixture was much lower than that of premixed H_2/air mixture.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2013年第6期1189-1192,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.50976003
No.50976115)
教育部博士点基金(No.20100001120003
No.20120001110080)
