Linking Problem

shivakumar · May 7, 2015, 01:31

Hi,

I have obtained solution of cylinder. Here I used FLUENT udf to identify/visualize the regions of viscous and shock effects. In fluent post processing, I am clearly observing these regions. When I imported same .cas and .dat file to CFX post, am not able to find these regions.. Is it possible to link fluent udf to CFX post? If so then how it is done?

Thanks in advance

ghorrocks · May 7, 2015, 02:22

No, you cannot directly link a Fluent UDF to CFD-Post.

But you can get the UDF to set a simulation variable which you write to the results file. You can view that in CFD-Post. Or you might be able to do the same calculation which is done in the UDF in CFD-Post.

shivakumar · May 7, 2015, 02:27

Quote:

Originally Posted by ghorrocks

But you can get the UDF to set a simulation variable which you write to the results file. You can view that in CFD-Post. Or you might be able to do the same calculation which is done in the UDF in CFD-Post.

Thank you for the reply..

Can you explain little bit more as how it is done?

ghorrocks · May 7, 2015, 18:18

In fluent, write the UDF result to a user variable. Make sure the user variable is in the output file. Then you can see it in CFD-Post.

shivakumar · May 8, 2015, 01:55

Thank you

Quote:

write the UDF result to a user variable. Make sure the user variable is in the output file

In the cas and dat file itself the results of udf are present.. Do I need to take out the separate solution data from the fluent? and User variable means separate dat file for the results of udf?

Please lead me

ghorrocks · May 8, 2015, 02:51

If the results of the UDF are present in the cas and dat files then can't you visualise that?

shivakumar · May 8, 2015, 03:08

Quote:

ghorrocks If the results of the UDF are present in the cas and dat files then can't you visualise that?

I visualized in fluent, but not able to visualize in cfx...

May 7, 2015, 01:31	Linking Problem	#1
shivakumar Senior Member Join Date: Mar 2013 Location: B'lr Posts: 130 Rep Power: 13	Hi, I have obtained solution of cylinder. Here I used FLUENT udf to identify/visualize the regions of viscous and shock effects. In fluent post processing, I am clearly observing these regions. When I imported same .cas and .dat file to CFX post, am not able to find these regions.. Is it possible to link fluent udf to CFX post? If so then how it is done? Thanks in advance

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May 7, 2015, 02:22		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	No, you cannot directly link a Fluent UDF to CFD-Post. But you can get the UDF to set a simulation variable which you write to the results file. You can view that in CFD-Post. Or you might be able to do the same calculation which is done in the UDF in CFD-Post.

May 7, 2015, 18:18		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	In fluent, write the UDF result to a user variable. Make sure the user variable is in the output file. Then you can see it in CFD-Post.

May 8, 2015, 02:51		#6
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	If the results of the UDF are present in the cas and dat files then can't you visualise that?