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Define initial liquid level for VOF model

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Old   May 9, 2007, 12:02
Default Define initial liquid level for VOF model
  #1
Gab
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Hi All,

Can someone please suggest how to define an initial liquid level for a vof model? In Fluent, there is a function 'patch' to do this. I am not sure if CFX also has a similar tool.

Thanks,

Gab

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Old   May 9, 2007, 15:30
Default Re: Define initial liquid level for VOF model
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Gert-Jan
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You can use a step function with a coordinate. For everything above x=0 to be gas use:

VfGasIni=0.999*step[x/1[m]]

VfLiquidIni=1-VfGas

Remember to provide a decent pressure distribution as well. This is very well documented in the help. Please read it good.

Another good advice is to use a minimum fraction of 1e-5. Do not use 0 as this will lead to problems.....

Gert-Jan

www.bunova.nl
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Old   May 10, 2007, 00:42
Default Re: Define initial liquid level for VOF model
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Gab
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Thanks a lot!
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