Theoretical analysis of effects of boundary layer bleed on scramjet thrust

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	Theoretical analysis of effects of boundary layer bleed on scramjet thrust
	Yue LJ(岳连捷); Xu XK(徐显坤); Zhang XY(张新宇)
刊名	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2013-10
通讯作者邮箱	yuelj@imech.ac.cn
卷号	56 期号:10 页码:1952-1961
关键词	scramjet boundary layer bleed theoretical analysis engine thrust
ISSN号	1674-7348
通讯作者	Yue, LJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
产权排序	[Yue LianJie; Xu XianKun; Chang XinYu] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China
中文摘要	The effects of boundary layer bleed on the scramjet thrust are studied in the present paper. A theoretical model is developed to evaluate the thrust increment and influencing factors. The thrust increment resulting from the bleed is dominated by the rise in total pressure recovery and bleed mass flow rate. The bleed mass flow rate exerts stronger impact on the engine thrust than the total pressure. According to current bleed design, it is a severe challenge for the engine to enhance its total pressure to maintain the original thrust when there is no bleeding. Furthermore, the initial total pressure recovery, fuel mass addition, combustion efficiency and area ratio of engine exit to entrance can affect the contributions of the bleeding to the thrust increment. The scramjet needs a higher rise in total pressure recovery to counteract the negative effect of bleed mass loss at higher initial total pressure recovery or larger area ratio of engine exit/entrance. More heat release results in a little lower demand on the rise in total pressure recovery for maintaining the scramjet thrust. These results will aid in understanding the fundamental mechanism of bleeding on engine thrust.
学科主题	内流
分类号	二类/Q3
收录类别	SCI ; EI
资助信息	National Natural Science Foundation of China [90716014, 91216115]
原文出处	http://dx.doi.org/10.1007/s11433-013-5257-4
语种	英语
WOS记录号	WOS:000324643000020
公开日期	2013-10-23
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/47494]
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	Yue LJ,Xu XK,Zhang XY. Theoretical analysis of effects of boundary layer bleed on scramjet thrust[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2013,56(10):1952-1961.
APA	Yue LJ,Xu XK,&Zhang XY.(2013).Theoretical analysis of effects of boundary layer bleed on scramjet thrust.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,56(10),1952-1961.
MLA	Yue LJ,et al."Theoretical analysis of effects of boundary layer bleed on scramjet thrust".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 56.10(2013):1952-1961.