Prediction of nano/micro aluminum particles ignition in oxygen atmosphere

doi:10.1016/j.fuel.2019.116952

IMECH-IR > 流固耦合系统力学重点实验室

	Prediction of nano/micro aluminum particles ignition in oxygen atmosphere
	Zou XR 1; Wang NF 1; Liao LJ(廖丽涓)2 ; Chu QZ 1; Shi BL 1
通讯作者	Liao, Lijuan(liaohuanxin@hotmail.com) ; Shi, Baolu(smashingsky@hotmail.com)
发表期刊	FUEL
	2020-04-15
卷号	266 页码:11
ISSN	0016-2361
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.
关键词	Nano/micro aluminum particles Ignition temperature Ignition delay time Heat transfer Oxidation
DOI	10.1016/j.fuel.2019.116952
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000510603500072
关键词[WOS]	MELT DISPERSION MECHANISM ; HEAT-TRANSFER ; THERMAL-CONDUCTIVITY ; COMBUSTION ; OXIDATION ; TEMPERATURE ; GAS ; ENERGY ; SPHERE ; ARGON
WOS研究方向	Energy & Fuels ; Engineering
WOS类目	Energy & Fuels ; Engineering, Chemical
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]
项目资助者	Domain Foundation of Equipment Advance Research of 13th Five-year Plan ; National Natural Science Foundation of China
论文分区	一类
力学所作者排名	1
RpAuthor	Liao, Lijuan ; Shi, Baolu
引用统计	被引频次：49[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81620
专题	流固耦合系统力学重点实验室
作者单位	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
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.

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Jp2020009A.pdf（3493KB）	期刊论文	出版稿	开放获取	CC BY-NC-SA	浏览下载