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-   -   droplet impact on a dry surface.... VOF again (http://www.cfd-online.com/Forums/fluent/91937-droplet-impact-dry-surface-vof-again.html)

rogerspass August 26, 2011 20:20

droplet impact on a dry surface.... VOF again
 
Hi. All,
I know there are some topics related to this droplet impact on a dry surface using VOF. But I still get lost. My question is how to setup the boundary conditions.

In more detail, for a positive to the right and up respectively coordinate, I create a 2D rectangular face domain, 10mm (L) x 5mm (W), where a 2mm water droplet is located in the center. Both faces are using 0.1 interval size of mesh. I set the the four boundary as walls, also set the droplet as a velocity inlet. The multiphase (VOF) was used. Gravity is point to -Y. After setting a velocity (Vy = -1 m/s) for the droplet in Fluent and proceed the calculation. The droplet just did not move at all. Can someone shade me some light? Do I miss something else? Thanks.


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