[MichaelVS]

Dear Colleagues,

I need your help in using C_VOF macro.
In my project I need to capture the interface between two fluids (C_VOF=0.5) and assign to the cells on the interface the values I would like to (for example temperature).

The problem is that I cannot select the cells with C_VOF = 0.5 . The udf works if I select cells with C_VOF=1 or 0, but not with the interface.

How could I make it?

Here is my udf

#include "udf.h"
#include "sg_mphase.h"

DEFINE_ADJUST(scan3,d)
{
Thread *t;
Thread **pt;
cell_t c;
int zone_ID=2;
Thread *mixture_thread = Lookup_Thread(d,zone_ID);
pt = THREAD_SUB_THREADS(mixture_thread);
thread_loop_c(t,d)
{
begin_c_loop(c,t)
if (C_VOF(c,pt[1])==0.5) /* pt0 - air, pt1 - ls */
{
C_T(c,pt[1])=1500;
}
end_c_loop(c,t)
}
}