[solanki004]

Hi

I am working on evaporation and condensation simulation problem. I want FLUENT to calculate cell density in vapor region using Lookup_Thread macro. I took vapor zone ID from cell-zone condition. But FLUENT is not calculating vapor cell density by cell thread of vapor zone. Can anyone help me?

UDF

#include "udf.h"
#define IDv 25
#define R 8314

DEFINE_ON_DEMAND(Calculation)
{
Domain *d;
cell_t c;
Thread *tc;
tc = Lookup_Thread(d,IDv);
real sum=0,pressure;

thread_loop_c(c,d)
{
begin_c_loop(c, tc) /* loops over cells in a cell thread */
{
sum=sum+C_R(c,tc);
}
end_c_loop(c, tc)
}