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Unsteady Boundary Profile with data file

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Old   August 7, 2012, 10:00
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MINNESOTA
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Hi MAX

Thank you for your help.
Could you please tell me where I should write a profile, actually I'm getting confused, Should I create through define profile option in Fluent or I can creat by myself in a text format and then saved it and uploading it in fluent? Thank you so much..

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Old   August 8, 2012, 00:33
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Maxime Perelli
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in 6.3 you could create your profile as text file, or also in Fluent
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Old   March 2, 2013, 23:04
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I need the UDF
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Old   July 3, 2013, 08:49
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Hello.
I have simulation divided into two steps.
To set a boundary condition as transient profile in second step i need to write this transient profile during calculation of first step. Or may be i can compose this profile, using resulting .dat files? But i can't find how to do it automatically.
I know how to write simple profile (x y z parameter1 parameter2) but it is not transient. It is very hard to open all dat files and save profiles and then compose full transient profile.

Thank in advance for all help.
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Old   March 24, 2014, 05:15
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there is a good help on this thread, but i have a doubt
if my simulation has run for 1000s and now i want to change my pressure outlet BC by giving a profile should my first point be pressure at 1000s or i should start from 0.
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Old   March 24, 2014, 06:52
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there is a good help on this thread, but i have a doubt
if my simulation has run for 1000s and now i want to change my pressure outlet BC by giving a profile should my first point be pressure at 1000s or i should start from 0.
I not fully understand what you mean. But if you have already calculated 1000s and you want to continue with new BC profile, you just can read profile with data like this for example

time
1000
2000
3000
pressure
500
700
1300

or like this if your BC was steady

time
0
999
1000
2000
3000
pressure
30
30
500
700
1300

and you can continue your calculation.
But problem is in difference between your outlet bc until moment 1000s and after. If difference is significany it may be a problem.
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Old   March 24, 2014, 06:55
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i got the answer, thank you very much.
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