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UDFÈçÏ£º
#include "udf.h"
DEFINE_PROFILE(time_c1, th, nv )            

{
  face_t f;
  real x [ND_ND];
  real f_time = RP_Get_Real("flow-time";
  begin_f_loop (f,th)
    {
      F_CENTROID(x,f,th);
      if (f_time<=0.0002)
      {F_PROFILE(f,th,nv) =0.5;
      }
      else
      F_PROFILE(f,th,nv) = 0;
    }
end_f_loop(f,th)
}
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