Atomization of misaligned impinging liquid jets

doi:10.1063/5.0061981

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

	Atomization of misaligned impinging liquid jets
	Zhang, Chenwei 4; Zhang ZY(张振宇)3; Wu K(吴坤)3; Xia, Xi 2; Fan XJ(范学军)1,3
刊名	PHYSICS OF FLUIDS
	2021-09-01
卷号	33 期号:9 页码:15
关键词	AMP Exception AMP Exception
ISSN号	1070-6631
DOI	10.1063/5.0061981
通讯作者	Wu, Kun(wukun@imech.ac.cn)
英文摘要	This study numerically investigated the atomization characteristics of misaligned impinging jets, with the misalignment ratio e ranging between 0 and 0.2, by employing the volume of fluid method with an adaptive mesh refinement algorithm. The results show that the droplet Sauter mean diameter varies non-monotonically with e and reaches the minimum value, which implies the best atomization performance, at e = 0.1 under operating conditions concerned in the present work. Meanwhile, the moderately misaligned impingement also leads to a more uniform spatial dispersion of the atomized fragments and droplets. These unique spray behaviors can be attributed to the instability and disintegration of the liquid sheet formed upon jet impingement, as evident from the non-monotonic dependence of the breakup length of the liquid sheet on the misalignment ratio e . Analyses on the velocity fluctuation and vorticity distribution further suggest that the misalignment alters the intrinsic instability mode of the liquid sheet by introducing a lateral stretch effect, which diverts the peak streamwise momentum away from the centerline. The current finding indicates that misalignment tuning could be a promising optimization and control technique in propellant mixing and atomization.& nbsp;Published under an exclusive license by AIP Publishing.
分类号	一类/力学重要期刊
资助项目	National Natural Science Foundation of China[12072194] ; National Natural Science Foundation of China[51806013] ; Ministry of Industry and Information Technology[JCKY2019602D018] ; Ministry of Industry and Information Technology[WDZC-2019JGKK-02] ; Shanghai Sailing Program[20YF1420600] ; Beijing Institute of Technology Research Fund Program for Young Scholars[2020CX04047]
WOS关键词	ADAPTIVE SOLVER ; BREAKUP ; IMPINGEMENT ; SKEWNESS ; DYNAMICS ; LAMINAR ; PAIR
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:000717658800003
资助机构	National Natural Science Foundation of China ; Ministry of Industry and Information Technology ; Shanghai Sailing Program ; Beijing Institute of Technology Research Fund Program for Young Scholars
其他责任者	Wu, Kun
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87993]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Shanghai Jiao Tong Univ, Sch Mech Engn, Shanghai 200240, Peoples R China; 3.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 4.Beijing Inst Technol, Sch Mech Engn, Beijing 100081, Peoples R China;
推荐引用方式 GB/T 7714	Zhang, Chenwei,Zhang ZY,Wu K,et al. Atomization of misaligned impinging liquid jets[J]. PHYSICS OF FLUIDS,2021,33(9):15.
APA	Zhang, Chenwei,张振宇,吴坤,Xia, Xi,&范学军.(2021).Atomization of misaligned impinging liquid jets.PHYSICS OF FLUIDS,33(9),15.
MLA	Zhang, Chenwei,et al."Atomization of misaligned impinging liquid jets".PHYSICS OF FLUIDS 33.9(2021):15.