[weldman]

hi.i am writting below udf.i want that place of heat source in my code changing with time.but dont change.....please help me.....

/**************************************************************************/
/* UDF for specifying a sinusoidal temperature profile boundary condition */
/**************************************************************************/

# include "udf.h"

# define A 113795786.3

# define B 333333.33
# define v 0.003
DEFINE_PROFILE(Heato,thread, position)
{
    real x[ND_ND]; /* this will hold the position vector */
  real r;
  real z;
  real current_time;
  face_t f;
    begin_f_loop(f, thread) 
    {
        F_CENTROID(x,f,thread);
    z=current_time;
        r = (x[0]-0.03-v*z)*(x[0]-0.03-v*z)+(x[1]-0.05)*(x[1]-0.05);
        F_PROFILE(f, thread, position) = A*exp(-B*r);
        
      }
    end_f_loop(f, thread)
 }