Numerical and Experimental Study on the Duration of Nozzle Starting of the Reflected High-Enthalpy Shock Tunnel

doi:10.3390/app12062845

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

	Numerical and Experimental Study on the Duration of Nozzle Starting of the Reflected High-Enthalpy Shock Tunnel
	Yu JP(于江鹏)1,2; Li JP(李进平)1; Wang Q(汪球)1; Zhang XY(张晓源)1; Zhang SZ(张仕忠)1
刊名	APPLIED SCIENCES-BASEL
	2022-03-01
卷号	12 期号:6 页码:16
关键词	nozzle starting high-enthalpy shock tunnel center startup complete startup
DOI	10.3390/app12062845
通讯作者	Li, Jinping(lijinping@imech.ac.cn)
英文摘要	The starting process of the flow in the nozzle of the JF-14 shock tunnel (1.6 m in length, 500 mm in outlet diameter) in the State Key Laboratory of High Temperature Gas Dynamics is analyzed by calculation and experiment. Two key factors which directly affect the duration of the nozzle starting are the velocity of the expansion wave and the low-velocity zone generated by the interaction between the secondary shock wave and boundary layer on the wall surface. In the process of the nozzle starting, the flow field stabilizes at the center of the nozzle outlet first, and then gradually stabilizes along the radius direction, thus defining the central startup and complete startup of the nozzle. It is found that there is a critical initial pressure. When the initial pressure is lower than the critical pressure, the airflow can reach stability in the nozzle outlet center with the shortest time, otherwise, the time required is much longer. The time required for the airflow to stabilize in the whole outlet section is mainly affected by the size of the low-velocity zone. It is also found that only at a very low initial pressure can the airflow simultaneously reach stability at the entire outlet of the nozzle.
分类号	二类
资助项目	National Natural Science Foundation of China[12072352] ; Youth Innovation Promotion Association CAS[2021020]
WOS关键词	DRIVEN ; THERMOCOUPLES ; COMPUTATION ; SIMULATION ; FLOWS ; T4
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000776198800001
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
其他责任者	Li, Jinping
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88796]
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.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
推荐引用方式 GB/T 7714	Yu JP,Li JP,Wang Q,et al. Numerical and Experimental Study on the Duration of Nozzle Starting of the Reflected High-Enthalpy Shock Tunnel[J]. APPLIED SCIENCES-BASEL,2022,12(6):16.
APA	于江鹏,李进平,汪球,张晓源,&张仕忠.(2022).Numerical and Experimental Study on the Duration of Nozzle Starting of the Reflected High-Enthalpy Shock Tunnel.APPLIED SCIENCES-BASEL,12(6),16.
MLA	于江鹏,et al."Numerical and Experimental Study on the Duration of Nozzle Starting of the Reflected High-Enthalpy Shock Tunnel".APPLIED SCIENCES-BASEL 12.6(2022):16.