[nikiii]

What’s the problem with this udf?

#include "udf.h"
#define K 1.38e-23
#define e 1.6e-19
#define T 293
#define ci 240
#define E0 8.854e-12
#define pi 3.141593
#define KP 2.5 /* relative permittivity-particle dielectric constatnt */
#define Dp 4e-6 /* diameter of particles */
#define bi 0.00015 /* ion mobility */
DEFINE_DPM_BODY_FORCE(particle_body_force, p, i)
{
Domain*d;
real bforcex,bforcey, Qs, E, Q, tow, towc, Qp;
real bforce=0;
Thread *t;
cell_t c;
face_t f;
d=Get_Domain(2);
thread_loop_c(t,d)
{
begin_c_loop(c,t)
{
E=sqrt(ND_SUM(pow(C_UDMI(c,t,0),2),pow(C_UDMI(c,t, 1),2)));
Qs=(3*pi*E0*KP*pow(Dp,2)*E)/(KP+2);
tow=(4*E0)/(C_UDSI(c,t,1)*bi);
towc=(8*E0*K*T)/(Dp*e*ci*C_UDSI(c,t,1));
Qp=Qs*(P_TIME(p)/(P_TIME(p)+tow))+(2*pi*E0*Dp*K*T/e)*log(1+(P_TIME(p)/C_UDMI(c,t,2)));
C_UDMI(c,t,3)=Qp;
bforcex=Qp*C_UDMI(c,t,0);
bforcey=Qp*C_UDMI(c,t,1);
bforce=sqrt(ND_SUM(pow(bforcex,2),pow(bforcey,2))) ;
C_UDMI(c,t,4)=bforce;
}
end_c_loop(c,t)
}
I consider 2 uds and 5 udm in define/user define/scalars or memories.
It compiled successfully but when I want track particle in fluent, this error appear.
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: ()

If anybody know what should I do please help me. Thank you.