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patch volume fraction in VOF at every time step...

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Old   October 8, 2007, 06:16
Default patch volume fraction in VOF at every time step...
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Dear Friend

i am having one diffuculty in fluent.

Is it possible to patch the volume fraction (In VOF model) in every iteration or time step using udf.

Actually if we use DEFINE_INIT it is patching ok but it will be executed only at the time of initialisation.

Is it possible to use DEFINE_ADJUST or any other so that i can patch in every time step.

if it is possible to patch at every time step,I can patch the cell > Tvap as air.

thanking you

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Old   October 8, 2007, 23:23
Default Re: patch volume fraction in VOF at every time ste
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Hi Marco,

Instead of using udf for patching at every time step, you can use journal file which will patch the domains at every time step. You can see the fluent help to make the journal file.

It is more flexible and easy to use

hope it will help you

with warm regards, JSM
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Old   October 9, 2007, 05:05
Default Re: patch volume fraction in VOF at every time ste
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thanks JSM,

but I can't find VOF example in tutorial that use journal files...and I've never used this option..could you plaese give me some journal file sample that are used for patching in two phase VOF model please ?

thanks in advance
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Old   January 1, 2017, 13:56
Join Date: Jun 2015
Posts: 41
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Hossein1 is on a distinguished road
Could you please say how you resolved this issue?
I have a similar problem.

Hossein1 is offline   Reply With Quote


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