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Confinements regulate capillary instabilities of fluid threads
Chen XD(陈晓东); Xue CD(薛春东); Hu GQ(胡国庆)
Corresponding AuthorHu, Gongqing(ghu@zju.edu.cn)
Source PublicationJOURNAL OF FLUID MECHANICS
2019-08-25
Volume873Pages:816-834
ISSN0022-1120
AbstractWe study the breakup of confined fluid threads at low flow rates to understand instability mechanisms. To determine the critical conditions between the earlier quasi-stable necking stage and the later unstable collapse stage, simulations and experiments are designed to operate at an extremely low flow rate. The critical mean radii at the neck centres are identified by the stop-flow method for elementary microfluidic configurations. Two distinct origins of capillary instabilities are revealed for different confinement situations. One is the gradient of capillary pressure induced by the confinements of geometry and external flow, whereas the other is the competition between the capillary pressure and internal pressure determined by the confinements.
Keywordbreakup coalescence microfluidics multiphase flow
DOI10.1017/jfm.2019.426
Indexed BySCI ; EI
Language英语
WOS IDWOS:000473144000001
WOS KeywordMULTIPHASE FLOW ; LONG BUBBLES ; SIMULATIONS ; DROPLETS ; MOTION
WOS Research AreaMechanics ; Physics
WOS SubjectMechanics ; Physics, Fluids & Plasmas
Funding ProjectNational Natural Science Foundation of China[11772343] ; National Natural Science Foundation of China[11832017] ; National Natural Science Foundation of China[11572334] ; National Natural Science Foundation of China[11402274] ; CAS Key Research Program of Frontier Sciences[QYZDB-SSW-JSC036] ; CAS Strategic Priority Research Program[XDB22040403] ; Beijing Institute of Technology Research Fund Program for Young Scholars
Funding OrganizationNational Natural Science Foundation of China ; CAS Key Research Program of Frontier Sciences ; CAS Strategic Priority Research Program ; Beijing Institute of Technology Research Fund Program for Young Scholars
Classification一类/力学重要期刊
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/79432
Collection非线性力学国家重点实验室
Recommended Citation
GB/T 7714
Chen XD,Xue CD,Hu GQ. Confinements regulate capillary instabilities of fluid threads[J]. JOURNAL OF FLUID MECHANICS,2019,873:816-834.
APA 陈晓东,薛春东,&胡国庆.(2019).Confinements regulate capillary instabilities of fluid threads.JOURNAL OF FLUID MECHANICS,873,816-834.
MLA 陈晓东,et al."Confinements regulate capillary instabilities of fluid threads".JOURNAL OF FLUID MECHANICS 873(2019):816-834.
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