How can i check that my UDF is being used in fluent istead of its internal data

chemkin · June 7, 2012, 21:47

Dear all
I have written a UDF of volumetric reaction rate and hooked it in fluent. i want to know that is fluent using my UDF or the data i have given by user interface in material options.
and i also want to know that can i use " relax to chemical equilibrium" along with UDF in fluent.
Thanks in advance for your time and concern.

ghost82 · June 8, 2012, 04:20

I think you can add to your udf some i/o functions, such as printf and verify from the console (a sort of debug)..

But why fluent shouldn't use your options/udf?

Daniele

chemkin · June 8, 2012, 06:19

thanks buddy for help
actually first i hook the UDF and after some iterations unhook it. there is no effect. but when i change the data , in place of which this udf is being used, in fluent user interface effect came into pic. thatswhy i was confused that does this usf is being used or not.
by the way the function that you are talking about, cna you describe it a bit deep???

ghost82 · June 8, 2012, 08:53

Check this:
http://hpce.iitm.ac.in/website/Manua...df/node260.htm

You can place some printf inside your udf to see values which fluent is using during the simulation.

chemkin · June 8, 2012, 09:07

thanks man thanks a lot for the link. i used Message built in macro instead of printf . it is working .. thanks again

June 7, 2012, 21:47	How can i check that my UDF is being used in fluent istead of its internal data	#1
chemkin New Member Join Date: Jun 2012 Posts: 5 Rep Power: 15	Dear all I have written a UDF of volumetric reaction rate and hooked it in fluent. i want to know that is fluent using my UDF or the data i have given by user interface in material options. and i also want to know that can i use " relax to chemical equilibrium" along with UDF in fluent. Thanks in advance for your time and concern.

June 8, 2012, 09:07		#5
chemkin New Member Join Date: Jun 2012 Posts: 5 Rep Power: 15	thanks man thanks a lot for the link. i used Message built in macro instead of printf . it is working .. thanks again Last edited by chemkin; June 8, 2012 at 09:35.

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June 8, 2012, 04:20		#2
ghost82 Senior Member Rick Join Date: Oct 2010 Posts: 1,016 Rep Power: 28	I think you can add to your udf some i/o functions, such as printf and verify from the console (a sort of debug).. But why fluent shouldn't use your options/udf? Daniele

June 8, 2012, 06:19		#3
chemkin New Member Join Date: Jun 2012 Posts: 5 Rep Power: 15	thanks buddy for help actually first i hook the UDF and after some iterations unhook it. there is no effect. but when i change the data , in place of which this udf is being used, in fluent user interface effect came into pic. thatswhy i was confused that does this usf is being used or not. by the way the function that you are talking about, cna you describe it a bit deep???

June 8, 2012, 08:53		#4
ghost82 Senior Member Rick Join Date: Oct 2010 Posts: 1,016 Rep Power: 28	Check this: http://hpce.iitm.ac.in/website/Manua...df/node260.htm You can place some printf inside your udf to see values which fluent is using during the simulation.