| Investigation on Accelerated Initiation of Oblique Detonation Wave Induced by Laser-Heating Hot-Spot | |
Xin, Yirong; Shang JH(尚甲豪); Xiang, Gaoxiang; Wang Q(汪球)
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| Corresponding Author | Xiang, Gaoxiang([email protected]) ; Wang, Qiu([email protected]) |
| Source Publication | AEROSPACE
 |
| 2024-06-01 | |
| Volume | 11Issue:6Pages:16 |
| Abstract | A reliable initiation of oblique detonation is critical in oblique detonation engines, especially for oblique detonation engines under extreme conditions such as a high altitude and low Mach number, which may lead to excessive length of the induction zone and even the phenomenon of extinction. In this paper, surface ignition was applied to the initiation of oblique detonation, and a high-temperature region was set on the wedge to simulate the presence of a hot-spot induced by the laser heating. The two-dimensional multi-component Navier-Stokes equations considering a detailed H2 combustion mechanism are solved, and the oblique detonation wave accelerated by a hot-spot is studied. In this paper, hot-spots in the induction zone on the wedge, are introduced to explore the possibility of hot-spot initiation, providing a potential method for initiation control. Results show that these methods can effectively promote the accelerated initiation of the oblique detonation. Furthermore, the hot-spot temperature, size and position are varied to analyze their effects on the initiation position. Increasing the temperature and size of the hot-spot both can accelerate initiation, but from the perspective of energy consumption, a small hot-spot at a high temperature is preferable for accelerating ODW initiation than a large hot-spot at a low temperature. The initiated position of the oblique detonation is sensitive to the position of the hot-spots; if a 2000 K hotspot is at the beginning of the wedge, then the ODW's initiation distance will be reduced to about 30% of that without hotspot acceleration. |
| Keyword | oblique detonation initiation acceleration hot-spot numerical simulation Navier-Stokes equation |
| DOI | 10.3390/aerospace11060485 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001254628100001 |
| WOS Keyword | MIXTURES ; IGNITION ; COMBUSTION |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Aerospace |
| Funding Project | National Natural Science Foundation of China[12202365] ; Guangdong Basic and Applied Basic research Foundation[2022A1515011565] ; Guangdong Basic and Applied Basic research Foundation[2023A1515010031] ; Natural Science Foundation of Chongqing[2022NSCQ-MSX5709] ; Foundation of State Key Laboratory of High Temperature Gas Dynamics[2021KF10] ; China Postdoctoral Science Foundation[2021M692633] ; China Postdoctoral Science Foundation[2022T150534] |
| Funding Organization | National Natural Science Foundation of China ; Guangdong Basic and Applied Basic research Foundation ; Natural Science Foundation of Chongqing ; Foundation of State Key Laboratory of High Temperature Gas Dynamics ; China Postdoctoral Science Foundation |
| Classification | 二类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/95833 |
| Collection | 高温气体动力学国家重点实验室 |
| Recommended Citation GB/T 7714 | Xin, Yirong,Shang JH,Xiang, Gaoxiang,et al. Investigation on Accelerated Initiation of Oblique Detonation Wave Induced by Laser-Heating Hot-Spot[J]. AEROSPACE,2024,11,6,:16. |
| APA | Xin, Yirong,尚甲豪,Xiang, Gaoxiang,&汪球.(2024).Investigation on Accelerated Initiation of Oblique Detonation Wave Induced by Laser-Heating Hot-Spot.AEROSPACE,11(6),16. |
| MLA | Xin, Yirong,et al."Investigation on Accelerated Initiation of Oblique Detonation Wave Induced by Laser-Heating Hot-Spot".AEROSPACE 11.6(2024):16. |
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