[lopital03000]

hello, I want to simulate the heat transfer by convection in a cavity, the cavity subjected to a heat flux in terms of (y), q = 1-(y/0.04)*(y/0.04),
i want the udf of heat flux.
thanks....

[ghost82]

Originally Posted by lopital03000

hello, I want to simulate the heat transfer by convection in a cavity, the cavity subjected to a heat flux in terms of (y), q = 1-(y/0.04)*(y/0.04),
i want the udf of heat flux.
thanks....

Try this:

#include "udf.h"
     
/* profile for heat flux*/
DEFINE_PROFILE(heatflux_profile, t, i)
{

  real x[ND_ND];   /* this will hold the position vector */
  face_t f;
     
  begin_f_loop(f, t)
  {
    F_CENTROID(x, f,t);
    F_PROFILE(f, t, i) =1.-(x[1]/0.04)*(x[1]/0.04);
  }
  end_f_loop(f, t)
}