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Microgravity flame extinction induced by a moving air vortex ring

文献类型：期刊论文

作者Quan, Sainan4,5; Zhu, Feng3; Lyu, Jinglong5; Xiong, Caiyi5; Huang, Xinyan1,4; Wang, Shuangfeng2,3
刊名PROCEEDINGS OF THE COMBUSTION INSTITUTE
出版日期2025
卷号41页码:8
关键词Flame extinction Microgravity Vortex ring Fire safety Firefighting efficiency
ISSN号1540-7489
DOI10.1016/j.proci.2025.105825
通讯作者Xiong, Caiyi(ycxiong@scut.edu.cn) ; Huang, Xinyan(xy.huang@polyu.edu.hk) ; Wang, Shuangfeng(sfwang@imech.ac.cn)
英文摘要With the growth of outer space exploration missions, a safe, effective and clean fire extinguishing in microgravity spacecraft environment is critical. This paper explores the microgravity flame extinction dynamics induced by a moving air vortex ring. Tests were conducted both on the ground and in microgravity by a drop tower for comparison. An electromagnetic piston-tube system was designed to produce well-controlled air vortex ring to extinguish candle flames with different heat release rates (HRRs). We found a linear extinction boundary correlating the flame HRR with the Reynolds number and characteristic thickness of vortex ring. The flame extinguishing efficiency of air vortex ring in microgravity is 30 % higher than that on the ground. To explain the underlying mechanism, the flame stretch rate that accounts for the unsteady effect, i.e., the competition between external disturbance and flame self-stabilization, was examined. The absence of gravity and buoyancy has a minimum effect on the vortex ring but reduces the oxygen supply and flame diffusion, thereby the flame in microgravity is more vulnerable to vortex ring disturbance. The power of generating a vortex ring is 2-3 orders of magnitude lower than the HRR of flame that it can extinguish, and such a power requirement can be further reduced by 20-30 % in microgravity. This work reveals limiting conditions of vortex ring-induced flame extinction in microgravity and helps design future clean firefighting system for space travel.
资助项目Science and Technology Program of Guangzhou[2024A04J3263] ; Guangdong Basic and Applied Basic Research Foundation[2024A1515012261] ; National Natural Science Foundation of China[52406172] ; Opening project of CAS Key Laboratory of Microgravity[NML202301]
WOS研究方向Thermodynamics ; Energy & Fuels ; Engineering
语种英语
WOS记录号WOS:001577009600001
资助机构Science and Technology Program of Guangzhou ; Guangdong Basic and Applied Basic Research Foundation ; National Natural Science Foundation of China ; Opening project of CAS Key Laboratory of Microgravity
源URL[http://dspace.imech.ac.cn/handle/311007/104044]  
专题力学研究所_国家微重力实验室
通讯作者Xiong, Caiyi; Huang, Xinyan; Wang, Shuangfeng
作者单位1.Hong Kong Polytech Univ, PolyU CSU Joint Res Ctr Space Mfg Technol, Hong Kong, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Key Lab Micrograv, Inst Mech, Beijing, Peoples R China
4.Hong Kong Polytech Univ, Dept Bldg Environm & Energy Engn, Hong Kong, Peoples R China
5.South China Univ Technol, Sch Mech & Automot Engn, Guangzhou, Peoples R China
推荐引用方式
GB/T 7714		 Quan, Sainan,Zhu, Feng,Lyu, Jinglong,et al. Microgravity flame extinction induced by a moving air vortex ring[J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE,2025,41:8.
APA Quan, Sainan,Zhu, Feng,Lyu, Jinglong,Xiong, Caiyi,Huang, Xinyan,&Wang, Shuangfeng.(2025).Microgravity flame extinction induced by a moving air vortex ring.PROCEEDINGS OF THE COMBUSTION INSTITUTE,41,8.
MLA Quan, Sainan,et al."Microgravity flame extinction induced by a moving air vortex ring".PROCEEDINGS OF THE COMBUSTION INSTITUTE 41(2025):8.

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来源：力学研究所

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