Laminar flame speeds of lean high-hydrogen syngas at normal and elevated   pressures

doi:10.1016/j.fuel.2016.05.013

CORC > 北京大学 > 工学院

	Laminar flame speeds of lean high-hydrogen syngas at normal and elevated pressures
	Zhang, Weikuo ; Gou, Xiaolong ; Kong, Wenjun ; Chen, Zheng
刊名	FUEL
	2016
关键词	Laminar flame speed Syngas Spherical flame Markstein length PROPAGATING SPHERICAL FLAMES FLAMMABILITY LIMIT H-2/CO COMBUSTION MARKSTEIN LENGTH BURNING VELOCITY H-2-CO MIXTURES IGNITION ENERGY KINETIC-MODEL CO2 DILUTION TEMPERATURES
DOI	10.1016/j.fuel.2016.05.013
英文摘要	The laminar flame speed is one of the most important combustion properties of a combustible mixture. It is an important target for chemical mechanism validation and development, especially at fuel-lean and high pressure conditions. In this study, the laminar flame speeds of two types of lean high-hydrogen syngas/oxygen/helium mixtures were measured at normal and evaluated pressures up to 10 atm using a dual-chambered high pressure combustion facility. Similar to experiments, numerical simulations of outwardly spherical flame propagation were conducted. Three chemical mechanisms for syngas available in the literature were considered in simulation and their performance in terms of predicting the stretched flame speeds, laminar flame speeds and burned Markstein lengths was examined through comparison between experimental and simulation results. It was found that at both normal and elevated pressures, the present experimental results agree well with those predicted by simulations using these three chemical mechanisms. Therefore, these chemical mechanisms for syngas can well predict the laminar flame properties of lean high-hydrogen syngas. Besides, the laminar flame speeds measured in the present work were compared with those measured from the heat flux method and large difference was observed. (C) 2016 Elsevier Ltd. All rights reserved.; National Natural Science Foundation of China [91441112]; Key Laboratory of Low-grade Energy Utilization Technologies and Systems at Chongqing University [LLEUTS 201304]; SCI(E); ARTICLE; simgxl@cqu.edu.cn; 958-963; 181
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/457495]
专题	工学院
推荐引用方式 GB/T 7714	Zhang, Weikuo,Gou, Xiaolong,Kong, Wenjun,et al. Laminar flame speeds of lean high-hydrogen syngas at normal and elevated pressures[J]. FUEL,2016.
APA	Zhang, Weikuo,Gou, Xiaolong,Kong, Wenjun,&Chen, Zheng.(2016).Laminar flame speeds of lean high-hydrogen syngas at normal and elevated pressures.FUEL.
MLA	Zhang, Weikuo,et al."Laminar flame speeds of lean high-hydrogen syngas at normal and elevated pressures".FUEL (2016).