Experimental and CFD Study of Internal Flow inside a Sessile Microdroplet undergoing Lateral Vibration

doi:10.18869/acadpub.jafm.73.248.28588

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	Experimental and CFD Study of Internal Flow inside a Sessile Microdroplet undergoing Lateral Vibration
	Zhu, T.1,2,4,5 ; Zhao, Z.3; Lv, L.2; Chen, W.1,4,5; Dong, L.1,2,4,5
	2018-09-01
发表期刊	JOURNAL OF APPLIED FLUID MECHANICS
ISSN	1735-3572
卷号	11 期号:5 页码:1247-1253
摘要	In this study, the internal flow pattern of a sessile microdroplet undergoing a lateral vibration was analyzed by using both the experimental and CFD simulation methods. By initially staining the droplet partially with fluorescent dye, the main flow inside the laterally vibrating microdrop was experimentally demonstrated to be that the main fluid flows downward along the central axis and ascends upward along the surface to form two counterflow circuits. Experimental evaluation of fluid mixing inside the droplets verified that the internal flowing velocity is dependent on the vibrating frequency, the main fluid flows faster at the resonant modes. CFD simulation using the VOF-CSF model showed that extra flow circuits exit inside the oscillating droplet besides the main flow. The diffusion of substrate momentum within the Stokes layer results in the two flow circuits near the bottom substrate, and the Laplace force due to the droplet deformation induces the two counter-current flow circuits near the surfaces of the microdroplet.
关键词	Internal flow Sessile drop Lateral vibration Microdrops
DOI	10.18869/acadpub.jafm.73.248.28588
关键词[WOS]	HYDROPHOBIC SURFACE ; GRADIENT SURFACES ; WATER DROPLET ; LIQUID-DROPS ; MOTION ; OSCILLATION ; EVAPORATION
语种	英语
资助项目	National Science Foundation of China[21606026] ; National Science Foundation of China[21776025] ; Fundamental Research Funds for the Central Universities[106112016CDJXZ228803] ; Graduate Scientific Research and Innovation Foundation of Chongqing, China[CYS16014]
WOS研究方向	Thermodynamics ; Mechanics
项目资助者	National Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Graduate Scientific Research and Innovation Foundation of Chongqing, China
WOS类目	Thermodynamics ; Mechanics
WOS记录号	WOS:000442785100011
出版者	ISFAHAN UNIV TECHNOLOGY
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/12085
专题	中国科学院青岛生物能源与过程研究所
通讯作者	Dong, L.
作者单位	1.Chongqing Univ, Sch Chem & Chem Engn, Chongqing 40004, Peoples R China 2.Yangtze Normal Univ, Res Ctr Environm Monitoring, Collaborat Innovat Ctr Green Dev Wuling Moutain A, Sch Chem & Chem Engn,Hazard Prevent Three Gorges, Chongqing 408100, Peoples R China 3.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Shandong, Peoples R China 4.Chongqing Univ, Natl Municipal Joint Engn Lab Chem Proc Intensifi, Chongqing, Peoples R China 5.Chongqing Univ, Key Lab Low Grade Energy Utilizat Technol & Syst, Minist Educ, Chongqing, Peoples R China
推荐引用方式 GB/T 7714	Zhu, T.,Zhao, Z.,Lv, L.,et al. Experimental and CFD Study of Internal Flow inside a Sessile Microdroplet undergoing Lateral Vibration[J]. JOURNAL OF APPLIED FLUID MECHANICS,2018,11(5):1247-1253.
APA	Zhu, T.,Zhao, Z.,Lv, L.,Chen, W.,&Dong, L..(2018).Experimental and CFD Study of Internal Flow inside a Sessile Microdroplet undergoing Lateral Vibration.JOURNAL OF APPLIED FLUID MECHANICS,11(5),1247-1253.
MLA	Zhu, T.,et al."Experimental and CFD Study of Internal Flow inside a Sessile Microdroplet undergoing Lateral Vibration".JOURNAL OF APPLIED FLUID MECHANICS 11.5(2018):1247-1253.