Radical recombination in a hydrocarbon-fueled scramjet nozzle

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	Radical recombination in a hydrocarbon-fueled scramjet nozzle
	Zhang XY(张晓源); Qin LZ; Chen H(陈宏); He XZ; Liu Y
刊名	Chinese Journal of Aeronautics
	2014-12
通讯作者邮箱	zhangxiaoyuan@sa.buaa.edu.cn; qinlizi@126.com
卷号	27 期号:6 页码:1413-1420
关键词	Chemical reactions Nozzles Performance calculation Radical Recombination
ISSN号	1000-9361
通讯作者	Qin, LZ (reprint author), Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China.
产权排序	[Zhang Xiaoyuan; Qin Lizi; Liu Yu] Beihang Univ, Sch Astronaut, Beijing 100191, Peoples R China; [Chen Hong] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; [He Xuzhao] China Aerodynam Res & Develop Ctr, Mianyang 621000, Peoples R China
合作状况	国内
中文摘要	To reveal the radical recombination process in the scramjet nozzle flow and study the effects of various factors of the recombination, weighted essentially non-oscillatory (WENO) schemes are applied to solve the decoupled two-dimensional Euler equations with chemical reactions to simulate the hydrocarbon-fueled scramjet nozzle flow. The accuracy of the numerical method is verified with the measurements obtained by a shock tunnel experiment. The overall model length is nearly 0.5 m, with inlet static temperatures ranging from 2000 K to 3000 K, inlet static pressures ranging from 75 kPa to 175 kPa, and inlet Mach numbers of 2.0 +/- 0.4 are involved. The fraction Damkohler number is defined as functions of static temperature and pressure to analyze the radical recombination progresses. Preliminary results indicate that the energy releasing process depends on different chemical reaction processes and species group contributions. In hydrocarbon-fueled scramjet nozzle flow, reactions with H have the greatest contribution during the chemical equilibrium shift. The contrast and analysis of the simulation results show that the radical recombination processes influenced by inflow conditions and nozzle scales are consistent with Damkohler numbers and potential dissociation energy release. The increase of inlet static temperature improves both of them, thus making the chemical non-equilibrium effects on the nozzle performance more significant. While the increase of inlet static pressure improves the former one and reduces the latter, it exerts little influence on the chemical non-equilibrium effects. (C) 2014 Production and hosting by Elsevier Ltd. on behalf of CSAA & BUAA.
学科主题	Engineering
分类号	二类
收录类别	SCI ; EI ; CSCD
原文出处	http://dx.doi.org/10.1016/j.cja.2014.10.007
语种	英语
CSCD记录号	CSCD:5316129
WOS记录号	WOS:000348588300008
公开日期	2015-03-11
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/49567]
专题	力学研究所_高温气体动力学国家重点实验室
推荐引用方式 GB/T 7714	Zhang XY,Qin LZ,Chen H,et al. Radical recombination in a hydrocarbon-fueled scramjet nozzle[J]. Chinese Journal of Aeronautics,2014,27(6):1413-1420.
APA	Zhang XY,Qin LZ,Chen H,He XZ,&Liu Y.(2014).Radical recombination in a hydrocarbon-fueled scramjet nozzle.Chinese Journal of Aeronautics,27(6),1413-1420.
MLA	Zhang XY,et al."Radical recombination in a hydrocarbon-fueled scramjet nozzle".Chinese Journal of Aeronautics 27.6(2014):1413-1420.