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Three-dimensional direct numerical simulation for film-boiling contact of moving particle and liquid droplet
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10.1063/1.2386027
/content/aip/journal/pof2/18/11/10.1063/1.2386027
http://aip.metastore.ingenta.com/content/aip/journal/pof2/18/11/10.1063/1.2386027
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Computational domain and initial configuration.

Image of FIG. 2.
FIG. 2.

Velocity interpolation scheme in the immersed boundary method (no slip).

Image of FIG. 3.
FIG. 3.

Boundary layer coordinates.

Image of FIG. 4.
FIG. 4.

Vapor layer model for oblique collision.

Image of FIG. 5.
FIG. 5.

Schematic diagram for determining the vapor layer properties.

Image of FIG. 6.
FIG. 6.

Simulated 3D images and experimental photos of the collision process between a acetone droplet and a particle at . The unit for the coordinate is cm.

Image of FIG. 7.
FIG. 7.

(a) Simulated 3D images of the collision process between a n-heptane droplet and a particle at . The unit for the coordinate is cm. (b) Simulated cross-sectional velocity field for the collision given in Fig. 6. The unit for the coordinate is cm.

Image of FIG. 8.
FIG. 8.

Simulated 3D images of the particle-droplet collision using different mesh sizes.

Image of FIG. 9.
FIG. 9.

Simulated spread factor of the droplets during the collision shown in Fig. 6 at different mesh sizes.

Image of FIG. 10.
FIG. 10.

Simulated particle velocities during the collision using different mesh sizes.

Image of FIG. 11.
FIG. 11.

(Color) Simulated temperature field for the collision process shown in Fig. 6.

Image of FIG. 12.
FIG. 12.

Simulated particle surface temperature at the averaged particle temperature.

Image of FIG. 13.
FIG. 13.

Simulated images of the n-heptane droplet collision with particles of different sizes. The collision velocity is .

Image of FIG. 14.
FIG. 14.

Simulated particle velocities for droplet collisions with particles of different sizes.

Image of FIG. 15.
FIG. 15.

Droplet spread factors for droplet collisions with particles of different sizes.

Image of FIG. 16.
FIG. 16.

(Color) Simulated temperature fields during the collision processes shown in Fig. 13.

Image of FIG. 17.
FIG. 17.

Averaged particle temperature for droplet collisions with particles of different sizes.

Image of FIG. 18.
FIG. 18.

Simulated total heat transfer rate at the particle surface for three different particle sizes.

Image of FIG. 19.
FIG. 19.

Averaged heat flux at the particle surface for three different particle sizes.

Image of FIG. 20.
FIG. 20.

Initial configuration of oblique collision and the definition of obliquity.

Image of FIG. 21.
FIG. 21.

Simulated 3D images of the oblique collisions with different obliquities.

Image of FIG. 22.
FIG. 22.

Normalized contact areas during the droplet-particle collisions with different obliquities.

Image of FIG. 23.
FIG. 23.

The momentum changes of the droplet during the collisions as a function of obliquity. (a) direction; (b) direction.

Image of FIG. 24.
FIG. 24.

(Color) Simulated temperature fields during the oblique collision processes shown in Fig. 21.

Image of FIG. 25.
FIG. 25.

The averaged particle temperatures during the collision processes with different obliquities.

Image of FIG. 26.
FIG. 26.

The thermal energy loss of the particle as a function of the obliquity of the collision.

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/content/aip/journal/pof2/18/11/10.1063/1.2386027
2006-11-15
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Three-dimensional direct numerical simulation for film-boiling contact of moving particle and liquid droplet
http://aip.metastore.ingenta.com/content/aip/journal/pof2/18/11/10.1063/1.2386027
10.1063/1.2386027
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