Hysteresis of Shock Train Movement in the Isolator with a Ramp

doi:10.2514/1.J060051

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Hysteresis of Shock Train Movement in the Isolator with a Ramp
	Huang TL(黄庭隆)4,7; Zhang QF(张启帆)5,7; Yue LJ(岳连捷)1,2,3,7; Zhang P 6; Zhao QJ 5
刊名	AIAA JOURNAL
	2021-10-01
卷号	59 期号:10 页码:3873-3882
ISSN号	0001-1452
DOI	10.2514/1.J060051
通讯作者	Yue, Lianjie(yuelj@imech.ac.cn)
英文摘要	Inside the dual-mode scramjet engine, the shock train will move to a new location when the backpressure changes. Few works focus on the response of the shock train position to the backpressure cyclic variation. This work aims to investigate the behavior of the shock train under such backpressure conditions. Experiments were carried out in a Mach 3 direct-connect facility. The isolator is equipped with a ramp that is used to improve the isolator performance. The static pressures along the wall centerlines were measured. The schlieren imaging was used to provide flow visualization. The results show that a significant hysteresis occurs in the shock train position during the backpressure cyclic variation process. It is found that a large-scale subsonic wake flow region forms behind the rampwhen the shock train reaches the ramp trailing edge. The capability of the ramp to retain the existence of the wake flow determines the occurrence of the hysteresis. The effects of the ramp height and width on the hysteresis were examined. Based on the experimental data, the oscillation characteristics were discussed by using wavelet analysis and cross-spectrum analysis. The coupled oscillation between the shock train oscillation and the backpressure oscillation was observed.
分类号	一类/力学重要期刊
资助项目	National Natural Science Foundation of China[11672309] ; National Natural Science Foundation of China[11472279] ; Central Research Grant
WOS关键词	HYPERSONIC INLET ; MODEL ; UNSTART
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000739665800006
资助机构	National Natural Science Foundation of China ; Central Research Grant
其他责任者	Yue, Lianjie
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88278]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Chinese Acad Sci, Inst Engn Thermophys, Beijing 100049, Peoples R China; 3.Univ Chinese Acad Sci, Chinese Acad Sci, Sch Engn Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 5.Chinese Acad Sci, Inst Engn Thermophys, 11 Beisihuanxi Rd, Beijing 100190, Peoples R China; 6.Hong Kong Polytech Univ, Kowloon, Hung Hom, Hong Kong, Peoples R China; 7.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	Huang TL,Zhang QF,Yue LJ,et al. Hysteresis of Shock Train Movement in the Isolator with a Ramp[J]. AIAA JOURNAL,2021,59(10):3873-3882.
APA	黄庭隆,张启帆,岳连捷,Zhang P,&Zhao QJ.(2021).Hysteresis of Shock Train Movement in the Isolator with a Ramp.AIAA JOURNAL,59(10),3873-3882.
MLA	黄庭隆,et al."Hysteresis of Shock Train Movement in the Isolator with a Ramp".AIAA JOURNAL 59.10(2021):3873-3882.