Confinements regulate capillary instabilities of fluid threads

doi:10.1017/jfm.2019.426

IMECH-IR > 非线性力学国家重点实验室

	Confinements regulate capillary instabilities of fluid threads
	Chen XD(陈晓东); Xue CD(薛春东); Hu GQ(胡国庆)
通讯作者	Hu, Gongqing(ghu@zju.edu.cn)
发表期刊	JOURNAL OF FLUID MECHANICS
	2019-08-25
卷号	873 页码:816-834
ISSN	0022-1120
摘要	We 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.
关键词	breakup coalescence microfluidics multiphase flow
DOI	10.1017/jfm.2019.426
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000473144000001
关键词[WOS]	MULTIPHASE FLOW ; LONG BUBBLES ; SIMULATIONS ; DROPLETS ; MOTION
WOS研究方向	Mechanics ; Physics
WOS类目	Mechanics ; Physics, Fluids & Plasmas
资助项目	National 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
项目资助者	National 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
论文分区	一类/力学重要期刊
力学所作者排名	1
RpAuthor	Hu, Gongqing
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/79431
专题	非线性力学国家重点实验室
推荐引用方式 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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