[atello28]

I wanted to interpret the udf below, which would give heat flux on a surface of a domain, but I encountered the errors at the end of the this note. The heat flux is getting greater when the radius gets bigger.

#include "udf.h"

DEFINE_PROFILE(heat_flux,thread,i)

{

real x[ND_ND];

real radius;

real omega;

real tau;

omega=62.83;

tau=20e6;

face_t f;

begin_f_loop(f,thread)

{

F_CENTROID (x,f,thread);

radius=sqrt(x[0]*x[0]+x[1]*x[1]);

F_PROFILE(f,thread,i) = radius*omega*tau

}

end_f_loop(f,thread);

}




line 19: parse error

line 21: f: undeclared variable

[ordinary]

I think nobody seems to know how to overcome UDF problems. I have also UDF problem with Fluent.

Best wishes

[atello28]

The problem was solved by placing

face_t f;

before omega=62.83