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Swirl flow focusing: A novel procedure for the massive production of monodisperse microbubbles
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10.1063/1.3123533
/content/aip/journal/pof2/21/4/10.1063/1.3123533
http://aip.metastore.ingenta.com/content/aip/journal/pof2/21/4/10.1063/1.3123533
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Simulated boundary geometry and fluid flow domains.

Image of FIG. 2.
FIG. 2.

Basic grid of the domain under study.

Image of FIG. 3.
FIG. 3.

Time dependence of the instantaneous bubble chord radius at the outlet, , for case 1 and four different values of .

Image of FIG. 4.
FIG. 4.

A sequence of snapshots showing bubble generation for case 1 and . In this case, the capillary meniscus oscillates.

Image of FIG. 5.
FIG. 5.

Time dependence of the instantaneous bubble chord radius at the outlet, , for case 2 and two different values of : (a) and (b) .

Image of FIG. 6.
FIG. 6.

Time dependence of the instantaneous bubble chord radius at the outlet, , for case 3 and two different values of : (a) and (b) (polydisperse breakup).

Image of FIG. 7.
FIG. 7.

Time dependence of the instantaneous bubble chord radius at the outlet, , for case 4 and two different values of : (a) and (b) .

Image of FIG. 8.
FIG. 8.

Time dependence of the instantaneous bubble chord radius at the outlet, , for case 5 and two different values of : (a) and (b) .

Image of FIG. 9.
FIG. 9.

A sequence of snapshots showing bubble formation for case 1, and . In this case, the liquid meniscus from which the microbubbles issue is clearly stable (it does not oscillate).

Image of FIG. 10.
FIG. 10.

as a function of time for case 1, and three different values of : (a) , (b) , and (c) .

Image of FIG. 11.
FIG. 11.

Radius of the monodisperse spherical bubbles obtained for case 1 as a function of for several values of .

Image of FIG. 12.
FIG. 12.

Instantaneous snapshots showing the nonmonodisperse bubbles generated for case 1, and two values of : (a) and (b) .

Image of FIG. 13.
FIG. 13.

as a function of for several values of and for (a) case 2 and (b) case 3.

Image of FIG. 14.
FIG. 14.

(a)–(d) A sequence of snapshots showing bubble generation for case 2, and . Note the steadiness of the capillary meniscus. (e) The intriguing, steady circular ripple formed in the middle of the meniscus surface (see arrow), which defines a steady nipple from which the gas ligament and the bubbles issue.

Image of FIG. 15.
FIG. 15.

as a function of for several values of .

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/content/aip/journal/pof2/21/4/10.1063/1.3123533
2009-04-30
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Swirl flow focusing: A novel procedure for the massive production of monodisperse microbubbles
http://aip.metastore.ingenta.com/content/aip/journal/pof2/21/4/10.1063/1.3123533
10.1063/1.3123533
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