| Prediction of nano/micro aluminum particles ignition in oxygen atmosphere | |
Zou XR1; Wang NF1; Liao LJ(廖丽涓)2 ; Chu QZ1; Shi BL1
| |
| Corresponding Author | Liao, Lijuan([email protected]) ; Shi, Baolu([email protected]) |
| Source Publication | FUEL
 |
| 2020-04-15 | |
| Volume | 266Pages:11 |
| ISSN | 0016-2361 |
| Abstract | Ignition prediction of aluminum particle is of great significance for a variety of propulsion and power systems to achieve optimal energy release within a limited residence time. In this study a heat transfer model employing temperature dependent coefficients was developed and validated to describe the heat exchange between quiescent/flow gas and aluminum particles from nano- to micro-size, covering the free-molecular to continuum regimes. By coupling heat transfer and aluminum oxidation, a theoretical model has been proposed to accurately capture ignition properties of both aluminum nanoparticle and microparticle (ANP and AMP) burning in hot oxygen atmosphere. Two formulas were obtained to predict the ignition temperature and ignition delay time for nano/micro particles, which show good agreements with experimental results, providing a convenient and accurate method for practical application. A parametric study illustrates that AMP ignition is affected by bulk flow velocity, radiation and oxygen concentration, particularly for AMP over 100 mu m in diameter; in contrast, ANP is more sensitive to alumina thickness which generally raises both ignition temperature and ignition delay time. The present study not only deepens the fundamental understanding of aluminum combustion but also provides a guideline for prompting ignition. |
| Keyword | Nano/micro aluminum particles Ignition temperature Ignition delay time Heat transfer Oxidation |
| DOI | 10.1016/j.fuel.2019.116952 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000510603500072 |
| WOS Keyword | MELT DISPERSION MECHANISM ; HEAT-TRANSFER ; THERMAL-CONDUCTIVITY ; COMBUSTION ; OXIDATION ; TEMPERATURE ; GAS ; ENERGY ; SPHERE ; ARGON |
| WOS Research Area | Energy & Fuels ; Engineering |
| WOS Subject | Energy & Fuels ; Engineering, Chemical |
| Funding Project | Domain Foundation of Equipment Advance Research of 13th Five-year Plan[61407200201] ; National Natural Science Foundation of China[11672314] ; National Natural Science Foundation of China[51676016] ; National Natural Science Foundation of China[11972087] |
| Funding Organization | Domain Foundation of Equipment Advance Research of 13th Five-year Plan ; National Natural Science Foundation of China |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Liao, Lijuan ; Shi, Baolu |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/81620 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Beijing Inst Technol, Sch Aerosp Engn, 5 Zhongguancun South St, Beijing 100081, Peoples R China; 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, 15 BeiSihuan West Rd, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Zou XR,Wang NF,Liao LJ,et al. Prediction of nano/micro aluminum particles ignition in oxygen atmosphere[J]. FUEL,2020,266:11.Rp_Au:Liao, Lijuan, Shi, Baolu |
| APA | Zou XR,Wang NF,廖丽涓,Chu QZ,&Shi BL.(2020).Prediction of nano/micro aluminum particles ignition in oxygen atmosphere.FUEL,266,11. |
| MLA | Zou XR,et al."Prediction of nano/micro aluminum particles ignition in oxygen atmosphere".FUEL 266(2020):11. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2020009A.pdf（3493KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment