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Old   May 14, 2012, 03:55
Default liquid film separation
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Vitaliy
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Hello, I'm trying to model separation of liquid film from the surface through the slit. Principal scheme is shown.
What kind of multiphase model and boundary conditions type should I use?

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Old   May 15, 2012, 01:43
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Use the VOF multiphase model.
At the inlet give the height of the water column, and specify volume/mass fractions at the outlets.

Regards
Luke
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Old   May 15, 2012, 05:27
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Quote:
Originally Posted by delaneyluke View Post
Use the VOF multiphase model.
At the inlet give the height of the water column, and specify volume/mass fractions at the outlets.

Regards
Luke
Thanks for the advice, but VOF model is not suitable, because phases must have different velocities (not 0 m/s).

Yours faithfully
Vitaliy
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Old   May 15, 2012, 05:40
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Then you would probably have to use the Eulerian model where a separate momentum eqn is solved for each phase.

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Luke
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Old   May 15, 2012, 05:58
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Quote:
Originally Posted by delaneyluke View Post
Then you would probably have to use the Eulerian model where a separate momentum eqn is solved for each phase.

Regards
Luke
I tried this model, but in few iterations i got "Divergence detected". May be it is connected with the type of BC that I used? I used pressure-inlet and pressure outlet BC.
Besides, should I set volume fravtion distribution on inlet by simple profile or using UDF?

Yours faithfully,
Vitaliy
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Old   May 26, 2012, 02:25
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Felix
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This is an very interesting subject. In fact ,I am doing some works about liquid films now,but I am not sure wether fluent can model this sort of problems or not,because the magnitude of thickness of liquid film maybe too tiny to meet the continuum fluid mechanics .But I am not sure about this,I am inverstgating about this. Before this I am using a software named Surface evolver .
Hope you can get an answer .

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Felix
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Old   February 5, 2013, 16:17
Question Modeling droplet by surface evolver
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Does anyone have experience with droplet simulation by surface evolver?
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