Calling variable in UDF

Tien · August 7, 2017, 07:54

Hi all,
When I writing a UDF, some variables that FLUENT already computed are needed in my model. Such like nucleation site density, departure frequency, departure diameter; these are already computed in RPI model. Also, the interfacial momentum transfer rate due to drag force, lift force and other interfacial forces.
Does anyone know the name of these variable or where can I find these names?
Thank you very much.

sbaffini · August 7, 2017, 08:47

If they are not explicitly cited in the manual, you can have some chance by looking trough the files in your installation directory. For example, for Fluent 15, I had the following folder:

C:\Program Files\ANSYS Inc\v150\fluent\fluent15.0.0\src

by looking trough all the #define you might recognize, among other things, some variables usable in UDFs.

August 7, 2017, 07:54	Calling variable in UDF	#1
Tien New Member Join Date: Aug 2017 Posts: 1 Rep Power: 0	Hi all, When I writing a UDF, some variables that FLUENT already computed are needed in my model. Such like nucleation site density, departure frequency, departure diameter; these are already computed in RPI model. Also, the interfacial momentum transfer rate due to drag force, lift force and other interfacial forces. Does anyone know the name of these variable or where can I find these names? Thank you very much.

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August 7, 2017, 08:47		#2
sbaffini Senior Member Paolo Lampitella Join Date: Mar 2009 Location: Italy Posts: 2,195 Blog Entries: 29 Rep Power: 39	If they are not explicitly cited in the manual, you can have some chance by looking trough the files in your installation directory. For example, for Fluent 15, I had the following folder: C:\Program Files\ANSYS Inc\v150\fluent\fluent15.0.0\src by looking trough all the #define you might recognize, among other things, some variables usable in UDFs.