On the evolution of n-octane atomization characteristics using an air-assisted intermittent spray method

doi:10.1016/j.fuproc.2022.107231

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	On the evolution of n-octane atomization characteristics using an air-assisted intermittent spray method
	Wu, Hao 2,3; Zhang, Fujun 3; Zhang, Zhenyu 2,3; Wu, Kun 1; Fan, Xuejun 1
刊名	FUEL PROCESSING TECHNOLOGY
	2022-06-15
卷号	231 页码:17
关键词	Air-assisted spray Droplet size-velocity joint probability density function Sauter Mean Diameter Turbulent intensity Slip velocity
ISSN号	0378-3820
DOI	10.1016/j.fuproc.2022.107231
通讯作者	Zhang, Zhenyu(zhenyu.zhang@bit.edu.cn)
英文摘要	In this study, droplet size and velocity of an intermittent air-assisted n-octane spray were measured using a Phase Doppler Particle Analyzer, focusing on the effect of operating parameters on time-resolved droplet behavior and local gas flow characteristics. An electro-magnetically actuated air-assisted injector, which features internal gas liquid premixing upstream and releasing through an annular nozzle, was used to generate intermittent sprays. The sampling time equalization method is employed to examine the time-resolved spray microscopic characteristics with various injection control parameters and spatial sampling positions. The droplet diameter range is found to be generally independent of air injection duration and sampling time while droplet velocity is correlated with these two parameters. A large air injection duration tends to accelerate droplets in the late spray period and leads to an increasing normalized gas flow velocity. Estimation of local gas flow turbulence intensity indicates a prominent radial sampling position dependence due to the rapid attenuation of the gas flow velocity away from the spray axis. A noteworthy finding for this intermittent air-assisted spray is that at 30 mm from the nozzle outlet, the zero point of droplet-gas mean slip velocity shifts toward the nozzle with sampling time. The time bin size employed to divide the sampling time has been proved to exert no influence on the statistical results of transient spray microscopic characteristics.
资助项目	National Natural Science Foundation of China[51806013] ; Foundation research funds of the Ministry of Industry and Information Technology[WDZC-2019-JGKK-02] ; Foundation research funds of the Ministry of Industry and Information Technology[JCKY2019602D018] ; Beijing Institute of Technology Research Fund Program for Young Scholars[2020CX04047]
WOS关键词	TWIN-FLUID ATOMIZATION ; VISCOUS-LIQUIDS ; FUEL-INJECTION ; DROPLET SIZE ; PRESSURE ; JET ; PARAMETERS ; DYNAMICS ; FIELD ; LADEN
WOS研究方向	Chemistry ; Energy & Fuels ; Engineering
语种	英语
WOS记录号	WOS:000791148500006
资助机构	National Natural Science Foundation of China ; Foundation research funds of the Ministry of Industry and Information Technology ; Beijing Institute of Technology Research Fund Program for Young Scholars
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89081]
专题	力学研究所_高温气体动力学国家重点实验室
通讯作者	Zhang, Zhenyu
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 2.Yangtze Delta Reg Acad Beijing Inst Technol, Jiaxing 314011, Zhejiang, Peoples R China 3.Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Wu, Hao,Zhang, Fujun,Zhang, Zhenyu,et al. On the evolution of n-octane atomization characteristics using an air-assisted intermittent spray method[J]. FUEL PROCESSING TECHNOLOGY,2022,231:17.
APA	Wu, Hao,Zhang, Fujun,Zhang, Zhenyu,Wu, Kun,&Fan, Xuejun.(2022).On the evolution of n-octane atomization characteristics using an air-assisted intermittent spray method.FUEL PROCESSING TECHNOLOGY,231,17.
MLA	Wu, Hao,et al."On the evolution of n-octane atomization characteristics using an air-assisted intermittent spray method".FUEL PROCESSING TECHNOLOGY 231(2022):17.