[asal]

Hello every body.

I have a geometry with inlet dimension of z=1.2 and y=2.46 at the inlet. I want to define an inlet temperature profile at the inlet using UDF.
the temperature varies along the y coordinate.


#include "udf.h"

DEFINE_PROFILE(inlet_x_temperature, thread, position)
{
real x[ND_ND]; /* this will hold the position vector */
real y;
face_t f;

begin_f_loop(f, thread)
{
F_CENTROID(x,f,thread);
y = x[1];
F_PROFILE(f, thread, position) = ...;
}
end_f_loop(f, thread)
}

But I got error. "floating point exception"

this is simple sketch of the geometry:

I think something with the coordinate should be the problem.
could any body help me?

Moreover I read somewhere that it is possible to define the boundary with the coordinated.

for instance I have two array
y = [0.2 0.4 ... 2.4]
t = [21 15 ... 18]
then I can define a temperature inlet profile based on the y coordinate and temperature array.
Any idea?

thanks.