| 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)2; Wang Q(汪球)2; Zhang XY(张晓源)2; Zhang SZ(张仕忠)2
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| Corresponding Author | Li, Jinping([email protected]) |
| Source Publication | APPLIED SCIENCES-BASEL
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| 2022-03-01 | |
| Volume | 12Issue:6Pages:16 |
| Abstract | 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. |
| Keyword | nozzle starting high-enthalpy shock tunnel center startup complete startup |
| DOI | 10.3390/app12062845 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000776198800001 |
| WOS Keyword | DRIVEN ; THERMOCOUPLES ; COMPUTATION ; SIMULATION ; FLOWS ; T4 |
| WOS Research Area | Chemistry ; Engineering ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied |
| Funding Project | National Natural Science Foundation of China[12072352] ; Youth Innovation Promotion Association CAS[2021020] |
| Funding Organization | National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Li, Jinping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/88797 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China |
| Recommended Citation 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.Rp_Au:Li, Jinping |
| 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. |
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| Jp2022FA489_2022_Num（6583KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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