Effects of water vapor dilution on the minimum ignition energy of   methane, n-butane and n-decane at normal and reduced pressures

doi:10.1016/j.fuel.2016.09.057

CORC > 北京大学 > 工学院

	Effects of water vapor dilution on the minimum ignition energy of methane, n-butane and n-decane at normal and reduced pressures
	Zhang, Weikuo ; Gou, Xiaolong ; Chen, Zheng
刊名	FUEL
	2017
关键词	Water vapor Minimum ignition energy Dilution limit Pressure PROPAGATING SPHERICAL FLAMES BURNING VELOCITY AIR FLAMES DIFFUSION FLAMES PREMIXED FLAMES LEWIS NUMBER SYNGAS MIXTURES H2O CO2
DOI	10.1016/j.fuel.2016.09.057
英文摘要	Water vapor dilution has great impact on fundamental combustion processes such as ignition, flame propagation and extinction. In the literature, there are many studies on how water vapor addition affects flame propagation and extinction limit. However, the influence of water vapor addition on ignition receives little attention. In this study, numerical simulations considering detailed chemical mechanisms are conducted for the ignition of methane, n-butane and n-decane/air/water vapor mixtures. The emphasis is spent on examining the effects of water vapor dilution on the ignition of these fuels at normal and reduced pressures. The minimum ignition energies (MIE) at different dilution ratios and initial pressures are obtained. It is found that at normal and reduced pressures, the MIE is proportional to the inverse of pressure and it increases exponentially with water vapor dilution ratio. A general correlation among the MIE, pressure and dilution ratio is proposed for each fuel. Furthermore, for stoichiometric methane/air/water vapor mixtures, the chemical and radiation effects of water vapor dilution are isolated and quantified. It is found that the three-body recombination reaction greatly increases the MIE and reduces the dilution limit. (C) 2016 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [51322620, 91441112]; SCI(E); ARTICLE; 111-116; 187
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/476542]
专题	工学院
推荐引用方式 GB/T 7714	Zhang, Weikuo,Gou, Xiaolong,Chen, Zheng. Effects of water vapor dilution on the minimum ignition energy of methane, n-butane and n-decane at normal and reduced pressures[J]. FUEL,2017.
APA	Zhang, Weikuo,Gou, Xiaolong,&Chen, Zheng.(2017).Effects of water vapor dilution on the minimum ignition energy of methane, n-butane and n-decane at normal and reduced pressures.FUEL.
MLA	Zhang, Weikuo,et al."Effects of water vapor dilution on the minimum ignition energy of methane, n-butane and n-decane at normal and reduced pressures".FUEL (2017).