[Venu Angirekula]

Hii Everyone,
i am working on Multiphase simulation in ANSYS Fluent 19.2, I have to know the volume fraction data for every timestep, so i used DEFINE_ADJUST to obtained volume fraction data. but my simulation is not running by poping this error at the beginning. If I comment the vof[i][j] line then its running fine, so i am feeling like problem with the C_VOF. please help me to sort it out.
UDF:


#include "udf.h"

Thread *t;
Thread **pt;
face_t f;
cell_t c;
real h = 0.0004;
real vof[25][25];
real X[ND_ND] ;
int i,j;
DEFINE_ADJUST(vol_frac,domain)
{

Domain *pdomain = DOMAIN_SUB_DOMAIN(domain,P_PHASE);

mp_thread_loop_c (t,domain,pt)
{

Thread *tp = pt[P_PHASE];
begin_c_loop_all(c,t)
{
C_CENTROID(X,c,tp);
i = floor((X[0]-h/2)/h) ;
j = floor((X[1]-h/2)/h) ;
vof[i][j] = C_VOF(c,tp);

}
end_c_loop(c,t)
}
}