UDF macro reference manual

TDi · March 22, 2010, 15:50

I am trying to get starting using a UDF in Fluent to change the geometry of my model as a function of time. There does not seem to be any reference guide in the FLUENT manuals for the types, data structures, and special functions used in the DEFINE_macros.
For instance, in one sample program, beam.c from section 2.6.3 of the UDF Manual, there are such things as SET_DEFORMING_THREAD_FLAG(), NV_S(), and Message(), for which I can find no definitions or explanations. Trying to infer their function from the sample programs seems a really haphazard way of presenting the information.

Is there a comprehensive listing of the tools to use in DEFINE_macros?

TDi · March 23, 2010, 11:33

in particular, I would like to know about the following functions (and related functions) used in the sample programs

begin_f_loop()
f_node_loop()
F_NODE()
NODE_Z()
NODE_POS_UPDATED()

Where are these defined?

MASOUD · March 24, 2010, 10:40

Check section 3.3 for looping macros.

Or just search a word of the aforementioned macros in your PDF file. You'll find them.

TDi · March 24, 2010, 10:53

Thanks. I'm not sure how I missed a whole section of the manual. I've been using the html version, which did not return search results for any of the above. Maybe the PDF's are better.

March 22, 2010, 15:50	UDF macro reference manual	#1
TDi Member Tim Diller Join Date: Mar 2010 Location: Austin, TX Posts: 32 Rep Power: 16	I am trying to get starting using a UDF in Fluent to change the geometry of my model as a function of time. There does not seem to be any reference guide in the FLUENT manuals for the types, data structures, and special functions used in the DEFINE_macros. For instance, in one sample program, beam.c from section 2.6.3 of the UDF Manual, there are such things as SET_DEFORMING_THREAD_FLAG(), NV_S(), and Message(), for which I can find no definitions or explanations. Trying to infer their function from the sample programs seems a really haphazard way of presenting the information. Is there a comprehensive listing of the tools to use in DEFINE_macros?

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March 23, 2010, 11:33		#2
TDi Member Tim Diller Join Date: Mar 2010 Location: Austin, TX Posts: 32 Rep Power: 16	in particular, I would like to know about the following functions (and related functions) used in the sample programs begin_f_loop() f_node_loop() F_NODE() NODE_Z() NODE_POS_UPDATED() Where are these defined?

March 24, 2010, 10:40		#3
MASOUD Senior Member MASOUD Join Date: Mar 2009 Posts: 102 Rep Power: 17	Check section 3.3 for looping macros. Or just search a word of the aforementioned macros in your PDF file. You'll find them.

March 24, 2010, 10:53		#4
TDi Member Tim Diller Join Date: Mar 2010 Location: Austin, TX Posts: 32 Rep Power: 16	Thanks. I'm not sure how I missed a whole section of the manual. I've been using the html version, which did not return search results for any of the above. Maybe the PDF's are better.