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Numerical study of a droplet migration induced by combined thermocapillary-buoyancy convection
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10.1063/1.3524822
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Affiliations:
1 Department of Mechanical Engineering, National Central University, Jhongli, 320 Taiwan, Republic of China
a) Author to whom correspondence should be addressed. Electronic mail: jcchen@ncu.edu.tw.
Phys. Fluids 22, 122101 (2010)
/content/aip/journal/pof2/22/12/10.1063/1.3524822
http://aip.metastore.ingenta.com/content/aip/journal/pof2/22/12/10.1063/1.3524822

## Figures

FIG. 1.

Schematic representation used for computation. The value of the level set function is equal to 0.5 at the air/droplet interface. The air phase (subdomain ) and the droplet phase (subdomain ) are represented by and , respectively.

FIG. 2.

Typical mesh used in the computational domain ( and ) for a droplet with static contact angle , footprint radius , and maximum height .

FIG. 3.

Quasisteady migration velocity of droplet vs droplet size with and .

FIG. 4.

Droplet velocity for different small sized droplets vs time with and .

FIG. 5.

(a) Flow field and (b) isotherms inside the droplet for different sizes , 1.8, and 2 mm with and . The solid arrows denote the moving direction. Isothermal contour lines are plotted every 5 K.

FIG. 6.

Different advancing and receding dynamic contact angles for different droplet sizes with and .

FIG. 7.

(a) Flow field and (b) isotherms inside the droplet for different sizes , 3, and 3.4 mm with and . The solid arrows denote the moving direction. Isothermal contour lines are plotted every 5 K.

FIG. 8.

(a) Flow field and (b) isotherms inside the droplet with , , and at different moving times. The solid arrow denotes the moving direction. Isothermal contour lines are plotted every 5 K.

FIG. 9.

(a) Flow field and (b) isotherms inside the droplet with , , and from to 10 s. The solid arrow denotes the moving direction. Isothermal contour lines are plotted every 5 K.

FIG. 10.

(a) Flow field and (b) isotherms inside the droplet with , , and at different moving times. The solid arrow denotes the moving direction.

## Tables

Table I.

Physical properties of the fluids (at ).

/content/aip/journal/pof2/22/12/10.1063/1.3524822
2010-12-07
2014-04-19

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