Air evolution during drop impact on liquid pool

被引：15

作者：

Lee, Ji San ^{[1
]}

Weon, Byung Mook ^{[2
,3
,4
]}

Park, Su Ji ^{[1
]}

Kim, Ji Tae ^{[1
]}

Pyo, Jaeyeon ^{[1
]}

Fezzaa, Kamel ^{[5
]}

Je, Jung Ho ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol, Xray Imaging Ctr, Dept Mat Sci & Engn, 77 Cheongam Ro, Pohang 37673, South Korea

[2] Sungkyunkwan Univ, Sch Adv Mat Sci & Engn, Soft Matter Phys Lab, SKKU Adv Inst Nanotechnol SAINT, Suwon 16419, South Korea

[3] Sungkyunkwan Univ, Res Ctr Adv Mat Technol, Suwon 16419, South Korea

[4] Johns Hopkins Univ, Dept Biomed Engn, Baltimore, MD 21218 USA

[5] Argonne Natl Lab, Xray Sci Div, Adv Photon Source, 9700 South Cass Ave, Argonne, IL 60439 USA

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

BUBBLE ENTRAINMENT; SURFACE-TENSION; ENTRAPMENT; VISCOSITY; DYNAMICS; DENSITY; ANTIBUBBLES; BREAKUP; HEPTANE; HEXANE;

D O I：

10.1038/s41598-020-62705-5

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We elucidate the evolution of the entrained air in drop impact on a wide range of liquids, using ultrafast X-ray phase-contrast imaging. We elaborate the retraction mechanism of the entrapped air film in terms of liquid viscosity. We found the criterion for deciding if the entrapped air evolves into single or double bubbles, as determined by competition among inertia, capillarity, and viscosity. Low viscosity and low surface tension induce a small daughter droplet encapsulated by a larger air shell bubble, forming an antibubble. We demonstrate a phase diagram for air evolution regarding hydrodynamics.

引用

页数：10

共 65 条

[1] Hydrodynamics of droplet coalescence [J].