[Tushar_Telmasre]

I am solving a simple solidification problem.

I want temperature gradient. so I am using a udm and trying to save C_T_G(C,t)[0] in it.
The function is interpreted but while solving it gives segmentation fault.

here is the udf
#include "udf.h"

DEFINE_EXECUTE_AT_END(temp_gradient)
{
Domain *d;

Thread *t;

cell_t c;

d = Get_Domain(1);

thread_loop_c(t,d)
{
begin_c_loop(c,t)
{
C_UDMI(c,t,0) = C_T_G(c,t)[0] ;
}
end_c_loop(c,t)
}

}


Note: if I change C_T_G(c,t)[0] to only C_T[c,t] the solution proceeds.
that means solver is giving me temperature data but not the gradient data. Also I have defined sufficient memory locations.

Why so?
Can anybody comment?