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How to select just the wall between Fluid and solid?

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Old   May 7, 2017, 10:42
Default How to select just the wall between Fluid and solid?
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Hello everyone,

I try to apply some own heat transfer coefficients between tube and fluid and therefore I need to select just the wall between.

In the boundary conditions, the wall is "zone_id 5" and the shadow wall is "zone id 10".

Now I want to see if the wallzone is selected right before I do some tests with own HTC. Therefore, I am writing the xyz coordinates to check. Unfortunately, too many zones are selected.*

My UDF is:

DEFINE_HEAT_FLUX(heat_flux, f, t, c0, t0, cid, cir)
real x[ND_ND];
Domain *d = Get_Domain(1);
Thread *thread = Lookup_Thread(d, 5);

begin_f_loop(f, thread)
printf("x= %f y = %f z = %f\n", x[0], x[1], x[2]);

Does someone see the problem?

Best regards
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