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Old   November 10, 2007, 02:40
Default How to see solver?
  #1
Asghari
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Hi all;

Can we see or even revise relations in fluent?

For instance, we know div.(u)=0 for a lot of incompressible flows. Now imagine I want to modify this relation (Div means divergence).

At first , I want to know how I can see this relation in Fluent source codes?

Then is it possible revising of this problem?I am familirized with UDF, but this isn't feasible via UDF.

Thanks a lot for every help.

Mehdi Asghari
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Old   November 12, 2007, 12:37
Default Re: How to see solver?
  #2
RE13
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That is a good question, I would like to see information about the source code and how we can tinker with it via UDF or some other means..
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Old   November 19, 2007, 06:50
Default Re: How to see solver?
  #3
Aris
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You cannot see the solver, unfortunatelly. But you can see Fluent's User Guide in order to see the equations. In these equations you can add source terms with the proper UDF (DEFINE_SOURCE). For example div(u)=1. Is an easy thing to do.
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Old   November 30, 2007, 08:34
Default Re: How to see solver?
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Asghari
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Ok;

But if we have been going to set a VOF two-phase problem with phase change, we are only allowed to assign a source term for primary phase and one another for secondary phase via a UDF.

Is it possible to set a source term for continuity equation in this state to get div(u)=mass source in cells containing interface?

Despite I sent my emails to FLUENT company for getting answer, I haven't still took satisfying answers.

Are there softwares to see their solvers?

Thanks a lot for any help.

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Old   November 30, 2007, 11:07
Default Re: How to see solver?
  #5
HP
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You cannot see solver Unfortunately. I have not used VOF... But i believe there would be a variable or flag that would carry the information about each cell if this is or not a cell containing interface. If you find that it will be easy in your UDF (source terms UDF calculates for all cells (the loop is done by Fluent)) to check if this cell is whether contains interface or not and after assign the proper source term.

An other important thing is to read Fluent User Guide and Udf manual, You may check out how you can handle stiff source terms...

Hope i helped
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Old   November 30, 2007, 13:01
Default Re: How to see solver?
  #6
kb
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There is a software named as flexpde use to solve PDE you need just to write your BC then the code can view the results and its programing not very difficult but I am not sure if it solve two phase flow if you need to try it you can download it freely from the http://avaxsphere.com/ under software .

kb
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