CFD Online Discussion Forums - initial value and UDF

Hi all,
Does anyone know, after initializing my problem, will the following command in my UDF:

T=C_T(c,t);

result in T being the initial value?

My problem is I have the following UDF:

Code:

 

#include "udf.h"

/* Mean temperature at outlet is calculated from the surrounding nodes */

/* Coordinate of the outlet is (x,y,z) = (0.275,-0.0138,-0.6747) */

DEFINE_ADJUST(outlet_temp,d)

{

 double Tout=0.0;

 double Temp;

 double coord[ND_ND];

 double xmin=0.273;

 double xmax=0.277;

 double ymin=-0.00675;

 double ymax=0.0;

 double zmin=-0.6858;

 double zmax=-0.6628;

 double x,y,z;

 double ncell=1.0;

 int nfaces=0;

 

 cell_t c;

 

 Thread *tt=Lookup_Thread(d, 31);

 

 /* Begin loop to determine the temperature at the centroid of cells near the outlet */

 

 begin_c_loop(c,tt)

 {

  C_CENTROID(coord,c,tt);

  x=coord[0];

  y=coord[1];

  z=coord[2];

  if ((x >= xmin) & (x <=xmax))

  {

   if ((y >= ymin) && (y <= ymax))

   {

    if ((z >= zmin) && (z <= zmax))

    {

          

     Temp = C_T(c,tt); /* Cell temperature */

     Tout += Temp;

     ncell ++;   /* Number of cells */

     printf("ncell= %d\n", ncell);

    }

   }

  }

 }

 end_c_loop(c,tt)

 

 

 Tout=Tout/(ncell-1); /* Average cell temperature surrounding outlet */

 printf("Tout= %d\n", Tout);

 

}

the first printf statement gives ncell=0, when it should keep increasing while Tout = 0 when it should be the initial value that I initialize.

Does anyone know why?

Thanks.

Cheers,
EH