Prediction of nano/micro aluminum particles ignition in oxygen atmosphere
文献类型:期刊论文
作者 | Zou XR2; Wang NF2; Liao LJ(廖丽涓)1; Chu QZ2; Shi BL2 |
刊名 | FUEL |
出版日期 | 2020-04-15 |
卷号 | 266页码:11 |
ISSN号 | 0016-2361 |
关键词 | Nano/micro aluminum particles Ignition temperature Ignition delay time Heat transfer Oxidation |
DOI | 10.1016/j.fuel.2019.116952 |
通讯作者 | Liao, Lijuan(liaohuanxin@hotmail.com) ; Shi, Baolu(smashingsky@hotmail.com) |
英文摘要 | 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. |
分类号 | 一类 |
WOS关键词 | MELT DISPERSION MECHANISM ; HEAT-TRANSFER ; THERMAL-CONDUCTIVITY ; COMBUSTION ; OXIDATION ; TEMPERATURE ; GAS ; ENERGY ; SPHERE ; ARGON |
资助项目 | 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] |
WOS研究方向 | Energy & Fuels ; Engineering |
语种 | 英语 |
WOS记录号 | WOS:000510603500072 |
资助机构 | Domain Foundation of Equipment Advance Research of 13th Five-year Plan ; National Natural Science Foundation of China |
其他责任者 | Liao, Lijuan ; Shi, Baolu |
源URL | [http://dspace.imech.ac.cn/handle/311007/81619] |
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.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, 15 BeiSihuan West Rd, Beijing 100190, Peoples R China 2.Beijing Inst Technol, Sch Aerosp Engn, 5 Zhongguancun South St, Beijing 100081, Peoples R China; |
推荐引用方式 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. |
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. |
入库方式: OAI收割
来源:力学研究所
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