Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart

doi:10.2514/1.J061874

	Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart
	Tong XT(仝晓通); Yue LJ(岳连捷); Chen H(陈昊); Zhang QF(张启帆); He CM(何成明)
通讯作者	Yue, Lian-jie(yuelj@imech.ac.cn)
发表期刊	AIAA JOURNAL
	2023-02
卷号	61 期号:2 页码:555-572
ISSN	0001-1452
摘要	The prediction of unstart boundaries of hypersonic inlets is significant to the engine control. To correct the previous conclusions based on the one-dimensional and inviscid flow assumption, the present paper numerically investigates the unstart characteristics of two-dimensional contraction ducts in viscous flow that vary with multiple controlling variables. Based on the newly defined dimensionless cowl length and effective internal contraction ratio, the similarity law of unstart is discovered. The universal empirical equation of unstart boundary for different cowl lengths, cowl lip heights, entrance boundary-layer thicknesses, unit Reynolds numbers, and Mach numbers is proposed, which can simplify the design of two-dimensional hypersonic inlets. With varying the dimensionless cowl length, three different types of short-cowl, transitional, and long-cowl unstarts are identified, owing to the different evolution mechanisms of separation region. The unstart displays a separation region growing under the streamwise pressure difference enhanced by the shock system or flow choke. In addition, the wall pressure criteria for unstart are correlated to the characteristic separation scale at unstart critical state and the dimensionless cowl length, which facilitates the unstart detection or early warning. It is observed that the Kantrowitz limit is close to the unstart boundaries for very short cowl and the isentropic limit is close to the unstart boundaries for very long cowl.
DOI	10.2514/1.J061874
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000878101800001
关键词[WOS]	SUPERSONIC INLET ; SHOCK ; CRITERIA ; CLASSIFICATION ; START/UNSTART ; MECHANISM ; GEOMETRY
WOS研究方向	Engineering
WOS类目	Engineering, Aerospace
资助项目	National Natural Science Foundation of China ; [U2141220] ; [11672309] ; [11902325] ; [12102440]
项目资助者	National Natural Science Foundation of China
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Yue, Lian-jie
引用统计	被引频次：3[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/311007/90634
专题	高温气体动力学国家重点实验室
作者单位	1.{Tong Xiao-Tong, Yue Lian-jie, Zhang Qi-Fan} Chinese Acad Sci Inst Mech State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China 2.{Chen Hao, Zhang Qi-Fan, He Cheng-Ming} Chinese Acad Sci State Key Lab High Temp Gas Dynam Beijing 100190 Peoples R China 3.{Tong Xiao-Tong, Yue Lian-jie} Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China
推荐引用方式 GB/T 7714	Tong XT,Yue LJ,Chen H,et al. Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart[J]. AIAA JOURNAL,2023,61,2,:555-572.
APA	仝晓通,岳连捷,陈昊,张启帆,&何成明.(2023).Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart.AIAA JOURNAL,61(2),555-572.
MLA	仝晓通,et al."Similarity Analysis on Two-Dimensional Hypersonic Inlets Unstart".AIAA JOURNAL 61.2(2023):555-572.

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