| Confinements regulate capillary instabilities of fluid threads | |
Chen XD(陈晓东) ; Xue CD(薛春东); Hu GQ(胡国庆)
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| Corresponding Author | Hu, Gongqing([email protected]) |
| Source Publication | JOURNAL OF FLUID MECHANICS
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| 2019-08-25 | |
| Volume | 873Pages:816-834 |
| ISSN | 0022-1120 |
| Abstract | 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. |
| Keyword | breakup coalescence microfluidics multiphase flow |
| DOI | 10.1017/jfm.2019.426 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000473144000001 |
| WOS Keyword | MULTIPHASE FLOW ; LONG BUBBLES ; SIMULATIONS ; DROPLETS ; MOTION |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | 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 |
| Funding Organization | 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 |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Hu, Gongqing |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/79431 |
| 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.Rp_Au:Hu, Gongqing |
| 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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2019226.pdf（3594KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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