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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....

Quote:

Originally Posted by lopital03000 (Post 394691)

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:

Code:

#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)

}