[Siba11]

Hi everyone.
I've written a small DEFINE_ADJUST udf.

#include "udf.h"

DEFINE_ADJUST(name,d)
{

int k = 0;
Message("k is %d \n",k);

}

As you can see in the attached image, it is printing the message twice per iteration. I know that ADJUST udf is called every time at the start of the solver iteration. But why is it printing the text twice, when it should print only once?

[AlexanderZ]

you run fluent in parallel:
1 host node and 1 computational mode (which is default)

[Siba11]

Originally Posted by AlexanderZ

you run fluent in parallel:
1 host node and 1 computational mode (which is default)

Hello Alexander.

Thank you for responding.
To my knowledge, the current versions of FLUENT do not support serial mode. So, to make my UDF print the message only once, do I need to parallelize it ?

[AlexanderZ]

yes

you may use Message0 macro to write data from node_0 only

Look into ansys fluent customization manual for examples