Learning Forum

[Danmei]

Hi all,

I'm running a simple simulation using mixture model + standard k-e turbulence model. I need to achieve the extraction of the secondary phase at the bottom wall by using udf. I used DEFINE_ADJUST to calculate the amount of mass I need to take out and DEFINE_SOURCE to add the source term in the cell zone(2nd phase). I am receiving this error message whenever I tried to calculate: Node 0: Process xxxx: Received signal SIGSEGV.

I have several check points:

1. The udf itself has no problem compiling and loading.
2. The simulation runs well without udf.
3. I set the UDM location to 1 before I build and load the library
4. I tried initializing the model without udf first and then hook up the udf, it didn't work
5. I tried to create the parallel version of my code, still it doesn't have any problems with compiling and loading but cannot start the computation
6. I tried interpret the udf instead, it doesn't do anything
7. I checked the zone id, they are all correct
8. I tried to hook up the DEFINE_ADJUST only, it gave me the same error, it seems that it is the DEFINE_ADJUST part that causes this problem

Can anyone help me?

#include "udf.h"

DEFINE_ADJUST(my_adjust1, d)

{

Thread *t, **pt;

face_t f;

cell_t c;

t = Lookup_Thread(d, 9);

begin_c_loop(c, t)

{

C_UDMI(c,t,0)=0.0;

pt=THREAD_SUB_THREADS(t);

if (C_V(c, pt[1]) < 0.0)

C_UDMI(c,t,0) = -1.368*C_R(c, pt[1])*C_VOF(c, pt[1])*C_V(c, pt[1]);

}

end_c_loop(c, t)

}

DEFINE_SOURCE(bot_source1, c, t, dS, eqn)

{

Thread *super_t = THREAD_SUPER_THREAD(t);

return (-1.0*C_UDMI(c,super_t,0));

}

[Keyur Kanade]

Looks duplicate of