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Old   July 16, 2010, 15:00
Default UDF - Temperature adjustment
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Paul
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Hi,

I am trying to increase the temperature at a supply inlet relative to a pressure outlet.

My UDF is below. I am trying to loop over the supply face (velocity inlet) and then specify its temperature as the extraction face (pressure outlet) + 10. The UDF compiles, but when I get a fatal error when I try to attach it to the velocity inlet temperature spec.

Code:
#include "udf.h"
#define extractID 17
#define supplyID 18
DEFINE_ADJUST(tempRecirc, d)
{
    face_t f;
    cell_t c;
    Thread *tf1 = Lookup_Thread(d, extractID);
    Thread *tf2 = Lookup_Thread(d, supplyID);
    float x[3];
    
    begin_f_loop(f, tf2)
    {
    F_T(f, tf2) = F_T(f, tf1) + 10.;
    }
    end_f_loop(f, tf2)
}
Thanks!
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Old   July 16, 2010, 15:09
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Paul
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I should note: it is not simply a matter of specifying the temperature + 10 at the inlet once which is why I am using DEFINE_ADJUST and not DEFINE_PROFILE. There are multiple recirculations and power dissipation throughout the volume, so I eventually want to specify the outlet face temperature according to a performance curve a function of the extraction temperature.

I am new to this, however, so please correct me if I should still be working with DEFINE_PROFILE.
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