[weij]

Dear all,

I want to modify the k (turbulent kinetic energy) value in wall-adjacent cells, but the following UDF doesn't work. When I compile the UDF, it reads that 'error C2275: 'Thread', illegal use of this type as an expression..'

Does anyone know how to solve this problem? Appreciated...

#include "udf.h"
DEFINE_ON_DEMAND(kmodification)
{
Domain *d;
Thread *t;
Thread *tf;
cell_t c;
face_t f;

int zone_ID=13; /*13 is the ID of a wall*/

d=Get_Domain(1);
Thread *tf=Lookup_Thread(d,zone_ID);
begin_c_loop(c,tf)
{
C_K(c,t)=0.5*C_K(c,t);
}
end_c_loop(c,t)
}

[AlexanderZ]

#include "udf.h"
DEFINE_ON_DEMAND(kmodification)
{
Domain *d;
Thread *t;
cell_t c;
int zone_ID=13; /*13 is the ID of a wall*/

d=Get_Domain(1); 
Thread *t=Lookup_Thread(d,zone_ID);
thread_loop_c(t, domain)
{
/* Loop over all cells */
begin_c_loop(c, t)
{
C_K(c,t)=0.5*C_K(c,t);
}
end_c_loop(c, t);
}
}

however, I'm not you, that you can control K this way
read Ansys Fluent Customization manual for more information and examples of UDF

best regards