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UDF 3D inlet b.c. problem

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Old   May 24, 2004, 12:34
Default UDF 3D inlet b.c. problem
  #1
Andrew
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Hello,

I am trying to define a 3D parabolic inlet velocity profile using a UDF. My udf compiles (as an interpreted udf) without any errors. It then becomes an option to pick in the inlet boundary condition drop down list. However, when I try to initialize the flow, the program freezes. Has anyone experienced this problem, and if so, did you find a solution?

Thank you,

Andrew
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Old   May 24, 2004, 15:00
Default Re: UDF 3D inlet b.c. problem
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zwdi
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Hi

What "program freezes" means?

Zwdi
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Old   May 24, 2004, 15:55
Default Re: UDF 3D inlet b.c. problem
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Andrew
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What I mean when I say the "program freezes" is that the simulation cannot be started. In the 'initialization window' I select initialize flow from inlet condition and that is as far as I can get. It doesn't initialize the flow or report an error. It just simply locks up - doesn't do anything. I cannot select another option, it won't respond to anything. All I can do is kill the program in the unix shell.
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Old   May 24, 2004, 17:04
Default Re: UDF 3D inlet b.c. problem
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Ryan
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This is kind of a roundabout way of getting around the problem, but you could manually write a profile in a text editor and read that into FLUENT for you boundary condition.
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Old   May 25, 2004, 04:24
Default Re: UDF 3D inlet b.c. problem
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ap
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First of all, check if the problem happens even without the UDF. If not, try to post the code you're using.

If you do a search on this forum, you should find a UDF for a 3D parabolic velocity profile I posted in an answer to another question.

Hi

ap
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