[marye]

Hi,

I work with Fluent, in my model I have 5 zones : an inlet velocity, an outlet pression, wall, interior and fluid.
I'd like to associate different values of viscocity for the 3 first zones by using a udf fonction but I'm a little stuck.
#include "udf.h"
DEFINE_PROPERTY (cell_viscosity,c,t)
{ real mu_lam;

them I don't know how to call the elements of the different zones.

if anyone could help me... Thank you very much!!

[gearboy]

Originally Posted by marye

Hi,

I work with Fluent, in my model I have 5 zones : an inlet velocity, an outlet pression, wall, interior and fluid.
I'd like to associate different values of viscocity for the 3 first zones by using a udf fonction but I'm a little stuck.
#include "udf.h"
DEFINE_PROPERTY (cell_viscosity,c,t)
{ real mu_lam;

them I don't know how to call the elements of the different zones.

if anyone could help me... Thank you very much!!

Using zone ID to judge different zone
#include "udf.h"
DEFINE_PROPERTY (cell_viscosity,c,t)
{
if(ZONE_ID1==THREAD_ID(t))
......
if(ZONE_ID2==THREAD_ID(t))
.....

[marye]

thank you!

[marye]

Well, I have another problem, I've tried to call the cells...
Just to try,

#include"udf.h"
DEFINE_PROPERTY(cell_viscosity, cell, thread)
{
real mu_lam;
cell_t c;
int i;
for (i=1, i<200, i++)
if ((cell_t ci %2)==0)
mu_lam = 2.;
else
mu_lam = 1.;
return mu_lam;
}

But it doesn't work... I'm new with both Fluent and C++...

If anyone could help..
Thanks!!