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

文献类型：期刊论文

作者Wu, Hao2,3; Zhang, Fujun3; Zhang, Zhenyu2,3; Wu, Kun1; Fan, Xuejun1; Fan XJ(范学军)
刊名FUEL PROCESSING TECHNOLOGY
出版日期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
DOI10.1016/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.
WOS关键词TWIN-FLUID ATOMIZATION ; VISCOUS-LIQUIDS ; FUEL-INJECTION ; DROPLET SIZE ; PRESSURE ; JET ; PARAMETERS ; DYNAMICS ; FIELD ; LADEN
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
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,&范学军.(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.

入库方式： OAI收割

来源：力学研究所

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