[LoUcAsss]

Hi

I am modeling a 3D air flow in a rotating geometry.
I use the following UDF to impose an increasing rotational velocity.

#include "udf.h"

DEFINE_ZONE_MOTION(fmotion,omega,axis,origin,velocity,time,dtime)
{
      if (time < 0.1) 
       {
         *omega = 6492.6*time; 
       }
         else
       {
        *omega = 1249.26;
       }
   
      N3V_D (velocity,=,0.0,0.0,0.0); 
      N3V_S(origin,=,0.0);        
      N3V_D(axis,=,0.0,0.0,1.0); 

    return;
}

I adapted it to the 2D case, and it worked very well in serial and parallel processing. But in 3D, it works only in serial processing.
Is there anybody who knows how to do it in parallel processing?

Thanks,

PS: I am using UNIX.

[LoUcAsss]

Now it doesn't work for the 2D case. Can somebody help me? Please!!

[malay]

try this ...

#include "udf.h"

DEFINE_ZONE_MOTION(fmotion,omega,axis,origin,velocity,time,dtime)
{
#if !RP_HOST     
 if (time < 0.1) 
       {
         *omega = 6492.6*time; 
       }
         else
       {
        *omega = 1249.26;
       }
   
      N3V_D (velocity,=,0.0,0.0,0.0); 
      N3V_S(origin,=,0.0);        
      N3V_D(axis,=,0.0,0.0,1.0); 

    return;
#endif
}

[LoUcAsss]

Hi malay!

Thank you!
For the 2D case, it seems that it works.
For the 3D case we'll see.

Yesterday I tried to re-calculate the 3D case and there is something strange. Because, when I interpreted my udf ( for the both case: the calculation started. But when I compiled it, the calculation didn't start iterating.
Maybe it's a problem of compiler...

[mohsenhiva]

Hi,

I have a problem in using your Udf. It cannot be interpreted and I receive below error! Can you help me with this issue. It is very urgent.

chip-exec: fmotion: wrong return type: float udf function expected
Error: received a fatal signal (Segmentation fault).

Error: received a fatal signal (Segmentation fault).
Error Object: #f