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

doi:10.18869/acadpub.jafm.73.248.28588

	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
刊名	JOURNAL OF APPLIED FLUID MECHANICS
	2018-09-01
卷号	11 期号:5 页码:1247-1253
关键词	Internal flow Sessile drop Lateral vibration Microdrops
ISSN号	1735-3572
DOI	10.18869/acadpub.jafm.73.248.28588
英文摘要	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.
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关键词	HYDROPHOBIC SURFACE ; GRADIENT SURFACES ; WATER DROPLET ; LIQUID-DROPS ; MOTION ; OSCILLATION ; EVAPORATION
WOS研究方向	Thermodynamics ; Mechanics
语种	英语
出版者	ISFAHAN UNIV TECHNOLOGY
WOS记录号	WOS:000442785100011
资助机构	National Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Graduate Scientific Research and Innovation Foundation of Chongqing, China
内容类型	期刊论文
源URL	[http://ir.qibebt.ac.cn/handle/337004/12084]
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.