Stability of Gas Diffusion Flame in Laterally Confined Space
文献类型：期刊论文
| 作者 | Wang, Xiuzhen1,2 ; Zhu, Feng2; Wang, Shuangfeng1,2; Wang SF(王双峰); Zhu F(朱凤); Wang XZ(王秀珍)
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| 刊名 | JOURNAL OF THERMAL SCIENCE
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| 出版日期 | 2024-09-13 |
| 页码 | 13 |
| 关键词 | jet diffusion flame Craya-Curtet number flame stability confined space |
| ISSN号 | 1003-2169 |
| DOI | 10.1007/s11630-024-2033-x |
| 通讯作者 | Zhu, Feng(zhufeng@imech.ac.cn) |
| 英文摘要 | Lateral-confined coaxial jet diffusion flame is common in micro thrusters, and the specific impulse is mainly obtained through thermodynamic calculations with an assumption of fuel combustion with an equivalence ratio, regardless of the stability of the combustion process. However, the flame behavior plays an important impact on the performance of a micro thruster through the varied combustion efficiency. The stability of confined coaxial jet diffusion flames with air coflow was studied by experiments and numerical simulation. Methane, hydrogen, and propane were used as fuels. Flame attachment, liftoff, blowout (extinction limits of lifted flame), and blowoff (extinction limits of attached flame) behaviors with the effect of confinement ratios and fuel properties were focused on. Among the range of the jet flow velocity in this research, the hydrogen flame is always attached to the jet exit, the flame tip goes from closed to open as the jet velocity increases, while the flame transitions from attachment to liftoff in the case of CH4 and C3H8. Further, in a narrow confined space, the attached flame for both CH4 and C3H8 undergoes liftoff followed by blowout. However, in a space with a high confinement ratio, the CH4 flame transitions directly from attachment to blowoff. The critical modified Craya-Curtet number, which is used to predict the onset of the recirculation, is determined through simulation and experiment, and the number is about 1.77. This work provides valuable data on flame stability inside a confined space and gives insights into the design of a thruster. |
| WOS关键词 | COMBUSTION CHARACTERISTICS ; PRESSURE ; DYNAMICS ; METHANE |
| 资助项目 | Space Application System of China Manned Space Program ; National Key Research and Development Program of China[2022YFF0504500] |
| WOS研究方向 | Thermodynamics ; Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001311951300001 |
| 资助机构 | Space Application System of China Manned Space Program ; National Key Research and Development Program of China |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96605]  |
| 专题 | 力学研究所_国家微重力实验室 |
| 通讯作者 | Zhu, Feng |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Xiuzhen,Zhu, Feng,Wang, Shuangfeng,et al. Stability of Gas Diffusion Flame in Laterally Confined Space[J]. JOURNAL OF THERMAL SCIENCE,2024:13. |
| APA | Wang, Xiuzhen,Zhu, Feng,Wang, Shuangfeng,王双峰,朱凤,&王秀珍.(2024).Stability of Gas Diffusion Flame in Laterally Confined Space.JOURNAL OF THERMAL SCIENCE,13. |
| MLA | Wang, Xiuzhen,et al."Stability of Gas Diffusion Flame in Laterally Confined Space".JOURNAL OF THERMAL SCIENCE (2024):13. |
入库方式： OAI收割
来源：力学研究所
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