UDF for Cp

stef_pasc · September 16, 2014, 05:36

Hi everybody!

I am using fluent 15.0 and I want to add a Cp to the material properties.
I wrote this simple code:

DEFINE_SPECIFIC_HEAT(define_cp, T, Tref, h, yi)
{
real cap;

cap=1000.;
*h = cap*(T-Tref);
return cap;
}

then I compile my file.c and I notice that I all defining functions are well compiled (define_property, define_adjust etc.) but define_specific_heat does not appear.

Can somebody help me please???

Stefano

Sun · September 17, 2014, 02:45

it looks fine according to the example here.
Have you tried to compile/interpret it individually without other functions? or maybe check if you have already enabled the energy equation (i know it sounds silly! but this things happen)
cheers!

sachin_c · June 2, 2015, 04:38

what is cap?

pakk · June 2, 2015, 06:34

Quote:

Originally Posted by sachin_c

what is cap?

In the example above 1000.

September 16, 2014, 05:36	UDF for Cp	#1
stef_pasc New Member Join Date: Jul 2014 Posts: 6 Rep Power: 12	Hi everybody! I am using fluent 15.0 and I want to add a Cp to the material properties. I wrote this simple code: DEFINE_SPECIFIC_HEAT(define_cp, T, Tref, h, yi) { real cap; cap=1000.; h = cap(T-Tref); return cap; } then I compile my file.c and I notice that I all defining functions are well compiled (define_property, define_adjust etc.) but define_specific_heat does not appear. Can somebody help me please??? Stefano

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September 17, 2014, 02:45		#2
Sun Senior Member Join Date: Nov 2010 Posts: 103 Rep Power: 16	it looks fine according to the example here. Have you tried to compile/interpret it individually without other functions? or maybe check if you have already enabled the energy equation (i know it sounds silly! but this things happen) cheers!

June 2, 2015, 04:38		#3
sachin_c New Member sachin chandroth Join Date: May 2015 Posts: 1 Rep Power: 0	what is cap?