Numerical simulation of atomization characteristics of kerosene under aircraft high-altitude conditions
文献类型：期刊论文
| 作者 | Li S(李森)1,2; Kou J(寇军)1,2; Wang ZY(王梓熠)1,2; Wei XL(魏小林)1,2 |
| 刊名 | AEROSPACE SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2025-12-01 |
| 卷号 | 167页码:10 |
| 关键词 | Atomization Kerosene droplet High-altitude relight Mach number Flight altitude |
| ISSN号 | 1270-9638 |
| DOI | 10.1016/j.ast.2025.110708 |
| 通讯作者 | Li, Sen(lisen@imechac.cn) |
| 英文摘要 | The atomization characteristics of kerosene after aircraft engine flameout before trying high-altitude relight are critical. In this study, the influences of flight altitude and Mach number on droplet-size distribution, droplet temperature, probability density function and uniformity are investigated by numerical simulation. After aircraft engine flameout, the increase of the intake air flowrate by decreasing flight altitude broadens the vortex core region of combustion chamber, it improves droplet secondary atomization and the uniformity. When flight altitude decreases from 10 km to 5 km at Ma=0.7, kerosene droplet diameter corresponding peak value of probability density function decreases from 69 mu m to 47 mu m. Increasing the flight Mach number (Ma) not only reduces kerosene droplet size, but also makes the droplet distribution more uniform. The aerodynamic Weber number increases with the increase of flight Mach number, and droplet is more easily broken into small droplets at Ma=0.7-0.9. When flight Mach number increases from 0.4 to 0.9 at H = 7 km, kerosene droplet diameter corresponding peak values of probability density function decreases from 87 mu m to 37 mu m, and this improves kerosene atomization for high-altitude relight. |
| 分类号 | 一类 |
| WOS关键词 | RELIGHT ; FLOW |
| 资助项目 | National Natural Science Foundation of China[52376135] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001546598000007 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | 李森 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103451]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li S,Kou J,Wang ZY,et al. Numerical simulation of atomization characteristics of kerosene under aircraft high-altitude conditions[J]. AEROSPACE SCIENCE AND TECHNOLOGY,2025,167:10. |
| APA | 李森,寇军,王梓熠,&魏小林.(2025).Numerical simulation of atomization characteristics of kerosene under aircraft high-altitude conditions.AEROSPACE SCIENCE AND TECHNOLOGY,167,10. |
| MLA | 李森,et al."Numerical simulation of atomization characteristics of kerosene under aircraft high-altitude conditions".AEROSPACE SCIENCE AND TECHNOLOGY 167(2025):10. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。