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-   -   Thin liquid FILM breaks with InterFOAM (http://www.cfd-online.com/Forums/openfoam/77500-thin-liquid-film-breaks-interfoam.html)

ovie June 24, 2010 18:22

Thin liquid FILM breaks with InterFOAM
 
Hi

I am simulating thin film flows driven by gravity on a vertical flat plate. I am using InterFoam with water-air mixture. The domain is initialized to a uniform film thickness over the length of the plate and uniform velocity. The pressure is initialized to zero everywhere.

The simulation runs for a verry short while and just when waves start forming on the surface, the liquid film breaks.

This is not consistent with results in the literature.

Does anyone have experience with this? Does this have to do with my initalization?

Thanks.

sega June 25, 2010 07:09

Why did you initialize with uniform velocity?
Maybe a zero velocity suits better?

ovie June 25, 2010 12:32

Quote:

Originally Posted by sega (Post 264501)
Why did you initialize with uniform velocity?
Maybe a zero velocity suits better?


The velocity is initialized to non zero values using Nusselt's theory but pressure is initialized to zero everywhere.

Have you been able to benchmark any thin falling film results? I would like to know more about the problem set up. Maybe I am not setting up the problem well.

Thanks

sega June 25, 2010 13:07

Quote:

Originally Posted by ovie (Post 264550)
Have you been able to benchmark any thin falling film results?

No. I was just brainstorming in this case.

ovie June 25, 2010 13:10

Quote:

Originally Posted by sega (Post 264552)
No. I was just brainstorming in this case.


OK. Thanks all the same. But have you successfully run thin film flows using InterFoam? do you experience any film breaks?

sega June 25, 2010 13:18

Quote:

Originally Posted by ovie (Post 264553)
OK. Thanks all the same. But have you successfully run thin film flows using InterFoam? do you experience any film breaks?

No, sorry. I was using interFoam for bubble growth simulations.


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