Numerical study of ignition and combustion of partially cracked kerosene in a mach 2.5 supersonic model combustor

	Numerical study of ignition and combustion of partially cracked kerosene in a mach 2.5 supersonic model combustor
	Zhong FQ(仲峰泉); Chen LH(陈立红); Chang XY(张新宇); Zhong FQ(仲峰泉)
会议录名称	18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012
	2012
会议名称	18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012
会议日期	SEP 24-28, 2012
会议地点	Tours, France
摘要	In this paper, unsteady process of ignition of partially cracked kerosene in a Mach 2.5 supersonic model combustor was studied numerically. The reaction flow was solved with SST k-ω turbulence model and a kinetic mechanism of kerosene reduced from a detailed mechanism. Eddy dissipation concept is used to model the turbulence/chemistry interaction and In Situ adaptive tabulation algorithm applied for the acceleration of numerical integrations. Based on the present results, time evolutions of ignitions of partially cracked kerosene are described and the temporal and spatial changes of main radicals and products are provided. It is found that the pilot hydrogen supplies a radical pool of OH in the cavity that promotes the ignition of kerosene and stabilizes the flame. For the present flow and fuel conditions, ignition of partially cracked kerosene is completed at a physical time of approximately 5.6ms. However, for uncracked gaseous kerosene, the finish time of ignition is significantly longer. It is believed that the HCO radical formed by the oxidation of C2H4, one of the major products of kerosene cracking, attributes to the ignition acceleration for partially cracked kerosene.
课题组名称	LHD高超声速推进技术
资助信息	American Institute for Aeronautics and Astronautics (AIAA)
ISBN号	9781600869310
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/48283
专题	高温气体动力学国家重点实验室
通讯作者	Zhong FQ(仲峰泉)
推荐引用方式 GB/T 7714	Zhong FQ,Chen LH,Chang XY,et al. Numerical study of ignition and combustion of partially cracked kerosene in a mach 2.5 supersonic model combustor[C]18th AIAA/3AF International Space Planes and Hypersonic Systems and Technologies Conference 2012,2012.

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