Comprehensive modeling of ignition and combustion of multiscale aluminum particles under various pressure conditions
文献类型：期刊论文
| 作者 | Hu, Zhenkun; Feng, Ying; Dong, Wei; Tang, Yong; Li, Jia; Liao LJ(廖丽涓) ; Zhao, Majie; Shi, Baolu
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| 刊名 | CHINESE JOURNAL OF AERONAUTICS
 |
| 出版日期 | 2024-11 |
| 卷号 | 37期号:11页码:188-202 |
| 关键词 | Multiscale aluminum particles Ignition delay time Combustion mechanism Combustion time Pressure |
| ISSN号 | 1000-9361 |
| DOI | 10.1016/j.cja.2024.07.021 |
| 英文摘要 | The ignition and combustion of aluminum particles are crucial to achieve optimal energy release in propulsion and power systems within a limited residence time. This study seeks to develop theoretical ignition and combustion models for aluminum particles ranging from 10 nm to 1000 mu m under wide pressure ranges of normal to beyond 10 MPa. Firstly, a parametric analysis illustrates that the convective heat transfer and heterogeneous surface reaction are strongly influenced by pressure, which directly affects the ignition process. Accordingly, the ignition delay time can be correlated with pressure through the p(b) relationship, with b increasing from -1 to -0.1 as the system transitions from the free molecular regime to the continuum regime. Then, the circuit comparison analysis method was used to interpret an empirical formula capable of predicting the ignition delay time of aluminum particles over a wide range of pressures in N-2, O-2, H2O, and CO2 atmospheres. Secondly, an analysis of experimental data indicates that the exponents of pressure dependence in the combustion time of large micron-sized particles and nanoparticles are -0.15 and -0.65, respectively. Further, the dominant combustion mechanism of multiscale aluminum particles was quantitatively demonstrated through the Damk & ouml;hler number (Da) concept. Results have shown that aluminum combustion is mainly controlled by diffusion as Da > 10, by chemical kinetics when Da <= 0.1, and codetermined by both diffusion and chemical kinetics when 0.1 < Da <= 10. Finally, an empirical formula was proposed to predict the combustion time of multiscale aluminum particles under high pressure, which showed good agreement with available experimental data. |
| 分类号 | 一类 |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001353680300001 |
| 资助机构 | National Natural Science Foundation of China {U20B2018, U23B6009] |
| 其他责任者 | Shi BL ; Liao LJ |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97217]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.【Shi, Baolu】 Beijing Inst Technol, Chongqing Innovat Ctr, Chongqing 404100, Peoples R China 2.【Liao, Lijuan】 Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China 3.【Hu, Zhenkun & Feng, Ying & Dong, Wei & Tang, Yong & Li, Jia & Zhao, Majie & Shi, Baolu】 Beijing Inst Technol, Sch Aerosp Engn, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu, Zhenkun,Feng, Ying,Dong, Wei,et al. Comprehensive modeling of ignition and combustion of multiscale aluminum particles under various pressure conditions[J]. CHINESE JOURNAL OF AERONAUTICS,2024,37(11):188-202. |
| APA | Hu, Zhenkun.,Feng, Ying.,Dong, Wei.,Tang, Yong.,Li, Jia.,...&Shi, Baolu.(2024).Comprehensive modeling of ignition and combustion of multiscale aluminum particles under various pressure conditions.CHINESE JOURNAL OF AERONAUTICS,37(11),188-202. |
| MLA | Hu, Zhenkun,et al."Comprehensive modeling of ignition and combustion of multiscale aluminum particles under various pressure conditions".CHINESE JOURNAL OF AERONAUTICS 37.11(2024):188-202. |
入库方式： OAI收割
来源：力学研究所
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