code_saturne User's Forum

Hello,

I am using Code_Saturne 3.0

In former versions, imposing arbitrary values of ntcabs or ttcabs (for postprocessing outputs) was possible with usnpst.F

Now, as I understand, the function cs_user_postprocess_activate of routine cs_user_postprocess.c seems to handle that.

The problem is that I don't understand the way it works.
For example, if I'd like to activate for ntcabs=145,317 and 982, how would I do ??

Thanks in advance.

Hello,

The cs_user_postprocess_activate routine should contain an example, which is similar to that of the old routine. ntcabs is replaced by nt_cur_abs, and ttcabs by t_cur_abs (longer versions of the same).

The only additional difference is that you can specify a writer to activate (when using multiple outputs), or activate all. If in doubt, you probably don't need fine grained control, so just activate all writers, using id 0 (ids < 0 are for automatic writers, > 0 for user-defiend writers).

Best regards,

Yvan

Hello,

I see that Yvan has just posted but I've posted this as well. When comparing previous and current versions:

ntcabs = nt_cur_abs = current time step number
ttcabs = t_cur_abs = current physical time

So, in the function cs_user_postprocess_activate you could, for example, code the following:

if (nt_cur_abs == 145)
{
your C coding here;
}

Please remember to remove or comment out the "if (false)" statement.

Best regards,

Brian Angel.

Thank you both for your fast and precise answers. Things are clearer to me now.

Best regards.