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Large bubble entrapment during drop impacts on a restricted liquid surface
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10.1063/1.3703674
/content/aip/journal/pof2/24/5/10.1063/1.3703674
http://aip.metastore.ingenta.com/content/aip/journal/pof2/24/5/10.1063/1.3703674
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

The experimental setup.

Image of FIG. 2.
FIG. 2.

(a) Large bubble entrapment sequence for a drop impact on the restricted liquid surface. The inner diameter of glass tube D t is 8 mm, D t * = 2.07. (b) A drop impact on a liquid pool (8 × 8 × 10 cm3). Both impact heights H are 49 mm, impact velocities 0.92 m/s, and drop diameters D are 3.86 mm.

Image of FIG. 3.
FIG. 3.

The We to Fr plot of primary and large bubble entrapment region. The limits of high-speed jet and primary bubble entrapment are reproduced from Liow's figure.10 The large bubble entrapment region for free surface refers to Pumphrey and Elmore.7 The terminal velocity line refers to Dingle and Lee.23

Image of FIG. 4.
FIG. 4.

The plot of large bubble entrapment region: (a) We to D t * and (b) K to D t * . The region of large bubble formation is not continuous and scatters at some discrete range, and the “error bar” denotes the limit of where the bubble is observed to be entrapped.

Image of FIG. 5.
FIG. 5.

The periodic appearance of large bubble entrapment. The two sinusoidal traces show the different drop shape at the moment of impact, which refer to drops with D = 3.86 mm and D = 2.64 mm, respectively. The notations and “error bars” denote the large bubble entrapment region in experiments. The pictures of drop with different falling time (released from different height) are captured at the moment of contact with liquid surface.

Image of FIG. 6.
FIG. 6.

Size of entrapped large bubble.

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/content/aip/journal/pof2/24/5/10.1063/1.3703674
2012-05-04
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Large bubble entrapment during drop impacts on a restricted liquid surface
http://aip.metastore.ingenta.com/content/aip/journal/pof2/24/5/10.1063/1.3703674
10.1063/1.3703674
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