| Radiation investigation behind 4.7 km/s shock waves with nitrogen using a square section shock tube | |
Zhang SH(张森豪)1,2; Zhang YZ(张宇哲)1,2; Xu YX(许以欣)1,2; Bai, Tianrui3; Luo K(罗凯)1 ; Li RJ(李仁杰)1,2; Wang Q(汪球)1; Lin X(林鑫)1; Li F(李飞)1
| |
| Corresponding Author | Li, Fei([email protected]) |
| Source Publication | ACTA MECHANICA SINICA
 |
| 2025-03-01 | |
| Volume | 41Issue:3Pages:10 |
| ISSN | 0567-7718 |
| Abstract | The thermochemical non-equilibrium phenomena encountered by hypersonic vehicles present significant challenges in their design. To investigate the thermochemical reaction flow behind shock waves, the non-equilibrium radiation in the visible range using a shock tube was studied. Experiments were conducted with a shock velocity of 4.7 km/s, using nitrogen at a pressure of 20 Pa. To address measurement difficulties associated with weak radiation, a special square section shock tube with a side length of 380 mm was utilized. A high-speed camera characterized the shock wave's morphology, and a spectrograph and a monochromator captured the radiation. The spectra were analyzed, and the numerical spectra were compared with experimental results, showing a close match. Temperature changes behind the shock wave were obtained and compared with numerical predictions. The findings indicate that the vibrational temperatures are overestimated, while the vibrational relaxation time is likely underestimated, due to the oversimplified portrayals of the non-equilibrium relaxation process in the models. Additionally, both experimental and simulated time-resolved profiles of radiation intensity at specific wavelengths were analyzed. The gathered data aims to enhance computational fluid dynamics codes and radiation models, improving their predictive accuracy. (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)4.7 km/s(sic)20 Pa(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)380 mm(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic); (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic): (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic); (sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic), (sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic). |
| Keyword | Nitrogen radiation Non-equilibrium Spectral measurement Shock waves Shock tube |
| DOI | 10.1007/s10409-024-24258-x |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:001324824300006 |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | Key-Area Research and Development Program of Guangdong Province[2021B0909060004] ; National Natural Science Foundation of China[12072355] ; National Natural Science Foundation of China[92271117] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0620202] ; State Key Laboratory of High Temperature Gas Dynamics |
| Funding Organization | Key-Area Research and Development Program of Guangdong Province ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; State Key Laboratory of High Temperature Gas Dynamics |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Li, Fei |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96857 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Jiangsu Univ Sci & Technol, Sch Energy & Power, Zhenjiang 212100, Peoples R China |
| Recommended Citation GB/T 7714 | Zhang SH,Zhang YZ,Xu YX,et al. Radiation investigation behind 4.7 km/s shock waves with nitrogen using a square section shock tube[J]. ACTA MECHANICA SINICA,2025,41,3,:10.Rp_Au:Li, Fei |
| APA | 张森豪.,张宇哲.,许以欣.,Bai, Tianrui.,罗凯.,...&李飞.(2025).Radiation investigation behind 4.7 km/s shock waves with nitrogen using a square section shock tube.ACTA MECHANICA SINICA,41(3),10. |
| MLA | 张森豪,et al."Radiation investigation behind 4.7 km/s shock waves with nitrogen using a square section shock tube".ACTA MECHANICA SINICA 41.3(2025):10. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment