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Mechanism study of deformation and mass transfer for binary droplet collisions with particle method
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10.1063/1.3089587
/content/aip/journal/pof2/21/3/10.1063/1.3089587
http://aip.metastore.ingenta.com/content/aip/journal/pof2/21/3/10.1063/1.3089587

Figures

Image of FIG. 1.
FIG. 1.

Schematic of the surface-tension model used in the MPS method.

Image of FIG. 2.
FIG. 2.

Initial geometrical settings of the undeformed spherical particle with respect to different coordinates.

Image of FIG. 3.
FIG. 3.

Head-on collision process in time series (the unit is second), , showing coalescence behavior.

Image of FIG. 4.
FIG. 4.

Head-on collision process in time series (in s), , showing the transition between coalescence and separation behavior.

Image of FIG. 5.
FIG. 5.

Side view of head-on collision at different instances (in seconds) for the case in Fig. 3 (with ). Note the formation of the small droplet at the center of the torus.

Image of FIG. 6.
FIG. 6.

The toruslike shape: (a) Experimental result (Ref. 9). (b) Numerical result (head-on collision, , ).

Image of FIG. 7.
FIG. 7.

Head-on collision process in time series (in seconds), with showing shattering behavior.

Image of FIG. 8.
FIG. 8.

Radius-off collision process in time series (in seconds), with showing coalescence behavior.

Image of FIG. 9.
FIG. 9.

Radius-off collision process in time series (in seconds), with showing coalescence behavior.

Image of FIG. 10.
FIG. 10.

Radius-off collision process in time series (in seconds), with showing stretching separation behavior.

Image of FIG. 11.
FIG. 11.

Glancing collision process in time series (in seconds), with showing coalescence.

Image of FIG. 12.
FIG. 12.

Glancing collision process in time series (in seconds), with showing stretching separation.

Image of FIG. 13.
FIG. 13.

Glancing collision process in time series (in seconds), with showing stretching separation.

Image of FIG. 14.
FIG. 14.

Qualitative map of binary collision regimes with two equal-sized water droplets.

Image of FIG. 15.
FIG. 15.

Mass distribution (left) and interface configuration at different instants (in seconds) for impact between light and dark droplets.

Image of FIG. 16.
FIG. 16.

Mechanism map of mixing rate for binary collision; a mixing rate of 1.0 means fully mixed.

Image of FIG. 17.
FIG. 17.

Trajectories of selected particles during radius-off collision (, , ).

Image of FIG. 18.
FIG. 18.

Trace of the mass transfer ; [(a) and (b)] ; (c) ; (d) .

Image of FIG. 19.
FIG. 19.

Plane of the mass (black particles) that form satellite drop later .

Image of FIG. 20.
FIG. 20.

Mass distribution change for satellite droplets in the middle with different Weber numbers.

Image of FIG. 21.
FIG. 21.

Mass distribution ratio of middle drops with different impact numbers. Regions: (a) merge, (b) separate without satellite, and (c) separate with one or more satellites.

Image of FIG. 22.
FIG. 22.

Mass distribution ratio of middle satellite drops with different Weber numbers. Regions: (a) merge, (b) separate without satellite, separate with one satellite, and (d) separate with two or more satellites.

Image of FIG. 23.
FIG. 23.

[(a)–(c)] Track of the particles for glancing collision and [(d) and (e)] the Tai Chi shape at 0.34 s, with impact condition .

Tables

Generic image for table
Table I.

Parameters of mass transfer for collision with , Fig. 15.

Generic image for table
Table II.

Parameters of mass transfer for representative collision examples (see Fig. 16).

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/content/aip/journal/pof2/21/3/10.1063/1.3089587
2009-03-19
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Mechanism study of deformation and mass transfer for binary droplet collisions with particle method
http://aip.metastore.ingenta.com/content/aip/journal/pof2/21/3/10.1063/1.3089587
10.1063/1.3089587
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