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Simple VOF simulation failure

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Old   May 31, 2016, 17:02
Default Simple VOF simulation failure
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I was having trouble with a more complicated VOF simulation so I tried reducing the complexity to the most simple case possible: a box filled 80% with water, air the top, and a pressure outlet. Gravity acts downward, holding the water in the container. When I run the simulation I expect nothing to happen, however the water disappears and the simulation is garbage. Can anyone advise me on any mistakes I made?

- Gravity, -9.81 m/s2 in y-direction
- Multiphase: VOF
- Viscous: k-e, Std WF
- air and water
Boundary Conditions
- pressure outlet, air backflow
- rest are walls
- standard, initialized at 0
- patched to fill 80% of box with water
Run Calculation
- 5 iterations
- 100 iterations
Attached Images
File Type: jpg FL1.jpg (105.8 KB, 6 views)
File Type: jpg FL2.jpg (98.2 KB, 3 views)
File Type: jpg FL3.jpg (107.6 KB, 2 views)
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