Theoretical analysis of effects of boundary layer bleed on scramjet thrust

	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); Yue, LJ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China.
发表期刊	SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
	2013-10
卷号	56 期号:10 页码:1952-1961
ISSN	1674-7348
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.
关键词	Scramjet Boundary Layer Bleed Theoretical Analysis Engine Thrust
学科领域	内流
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000324643000020
项目资助者	National Natural Science Foundation of China [90716014, 91216115]
课题组名称	LHD高超声速推进技术
论文分区	二类/Q3
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/47494
专题	高温气体动力学国家重点实验室
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.
推荐引用方式 GB/T 7714	Yue LJ,Xu XK,Zhang XY,et al. 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,&Yue, LJ .(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.

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