Time and Temperature dependant heat source term

Farsys · September 15, 2018, 03:19

Dear all
I'm new with fluent macros and i was wondering is there a way to write a both time and temperature dependant heat source term?
i have already used a time dependant one but what i wanted to know is that is it possible to use a temperature dependent term in my code or not,,

Tnx in advance

blackmask · September 15, 2018, 04:53

Yes, you can. Check the fluent UDF manual on C_T macro.

Farsys · September 16, 2018, 04:51

Dear blackmask
thanks for your reply but is it possible to use C_T macro for a solid zone?

Farsys · September 17, 2018, 11:14

#include "udf.h"
#define C1 -6.097e+05
#define C2 113.6
#define C3 2187
#define C4 0.004097
#define C5 -0.276
DEFINE_SOURCE(heat_gen,cell,thread,dS,eqn)
{
real source;
real time;
time = CURRENT_TIME;
source =C1+C2*time+C3*C_T(cell,thread)+C4*pow(time,2)+C5* time*C_T(cell,thread)
dS[eqn] = 0;
return source;

}

I have used this code for a time & temperature dependent heat source but when i compile it i get C:/Users/Farshad/AppData/Local/Temp/osso.c.7728.0.c: line 13: parse error.
i dont know what's wrong with it,can anyone help me out please?

blackmask · September 17, 2018, 21:03

You missed a ";" at the end of line 13.

Farsys · September 18, 2018, 08:28

God bless you dear blackmask what a simple mistake...

thanks for answering me

September 15, 2018, 03:19	Time and Temperature dependant heat source term	#1
Farsys New Member Join Date: Sep 2018 Posts: 6 Rep Power: 8	Dear all I'm new with fluent macros and i was wondering is there a way to write a both time and temperature dependant heat source term? i have already used a time dependant one but what i wanted to know is that is it possible to use a temperature dependent term in my code or not,, Tnx in advance

September 17, 2018, 21:03		#5
blackmask Senior Member Join Date: Aug 2011 Posts: 421 Blog Entries: 1 Rep Power: 22	You missed a ";" at the end of line 13. Farsys likes this.

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September 15, 2018, 04:53		#2
blackmask Senior Member Join Date: Aug 2011 Posts: 421 Blog Entries: 1 Rep Power: 22	Yes, you can. Check the fluent UDF manual on C_T macro.

September 16, 2018, 04:51		#3
Farsys New Member Join Date: Sep 2018 Posts: 6 Rep Power: 8	Dear blackmask thanks for your reply but is it possible to use C_T macro for a solid zone?

September 17, 2018, 11:14		#4
Farsys New Member Join Date: Sep 2018 Posts: 6 Rep Power: 8	#include "udf.h" #define C1 -6.097e+05 #define C2 113.6 #define C3 2187 #define C4 0.004097 #define C5 -0.276 DEFINE_SOURCE(heat_gen,cell,thread,dS,eqn) { real source; real time; time = CURRENT_TIME; source =C1+C2time+C3C_T(cell,thread)+C4pow(time,2)+C5 time*C_T(cell,thread) dS[eqn] = 0; return source; } I have used this code for a time & temperature dependent heat source but when i compile it i get C:/Users/Farshad/AppData/Local/Temp/osso.c.7728.0.c: line 13: parse error. i dont know what's wrong with it,can anyone help me out please?

September 18, 2018, 08:28		#6
Farsys New Member Join Date: Sep 2018 Posts: 6 Rep Power: 8	God bless you dear blackmask what a simple mistake... thanks for answering me