[NewFluent]

Hello,
I have a problem with my UDF (Execut-on-demand) after compiling and interprets it is not execut, and i have this message:
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.
Error Object: ()
/*************************************************
this my Udf
**************************************************/
#include "udf.h"
DEFINE_ON_DEMAND(my_adjust)
{
int ID=4;
Domain *domain;
Thread *t = Lookup_Thread(domain, ID);
real x[ND_ND];
cell_t c;
face_t f;
domain=Get_Domain(1);

thread_loop_c(t,domain)
{
begin_c_loop(c,t)
if (C_P(c,t)<0)
{C_P(c,t)=0;}
end_c_loop(c,t)
}
thread_loop_f(t,domain)
{
begin_f_loop(f,t)
if (F_P(f,t)<0)
{F_P(f,t)=0;}
end_f_loop(c,t)
}
}
/***********************************************/

[NewFluent]

Dear all,
In my simulation, I want to modify the pressure in to domain film when the pressure is negative then the pressure equal a zero.

[`e`]

You need to initialise 'domain' before calling it with the Lookup_Thread macro, for example:

int ID=4; 
Domain *domain = Get_Domain(1);
Thread *t = Lookup_Thread(domain, ID);