[eng_yasser_2020]

Hi every body,

I modeling a transient case which has a time dependent volumetric heat source applied in a wall. I wrote the UDF as follows:

#include "udf.h"
#define C1 0.0029369048 //define constant term

DEFINE_SOURCE(heat_gen,cell,thread,dS,eqn)
{
real source;
real time;
time = CURRENT_TIME; //taking time value;
source = time*C1; //time dependent heat source;
dS[eqn] = 0;
return source;
}

I Interpreted it with no problem, but when i hooked it to a wall it made this error:

heat_gen: wrong return type: void udf function expected
Error:
FLUENT received fatal signal (ACCESS_VIOLATION)
1. Note exact events leading to error.
2. Save case/data under new name.
3. Exit program and restart to continue.
4. Report error to your distributor.

So any help??!!