code_saturne User's Forum

Dear Cosimo, If you have the option the use a more recent build of Code_Saturne, you could try to flag your temperature as buoyant (key "is_buoyant") so it will be updated in the Velocity-Pressure loop. Combined with an increased NTERUP, it could potentially improve your results. Can you c...

Hi, The documentation says that the key 'auto_variables' can be modified using cs_probe_set_option. However, it seems to be missing from the list of available keys. Any chance to restrict the number of variables written by a probe? (I was able to add some values on top of the default ones using ' cs...

Dear Martin,

Thank you for your confirmation, it is clearer now.

Best regards,
Cedric

Dear Yvan, Thank you for your answer. I have found the computation of the lhs boundary contribution for the iterative gradient in "_iterative_scalar_gradient_old" (file cs_gradient.c). It is activated with the input flag recompute_cocg. However, there are no such things in "_iterative...

Hi,

The line "cpu time (seconds, -t) 3600" seems to indicate that you can not run your simulation on the login node for a long time.

The best thing to do is probably to run very short jobs on the login node or to move to the compute nodes.

Regards,
Cedric

Hello, According to the theory guide, there is a boundary contribution for the iterative gradient lhs. I was expecting to find that contribution in the subroutine _compute_cell_cocg_s_it by analogy with the lsq gradient (in the subroutine _compute_cell_cocg_s_lsq, the boundary contribution to the lh...

Dear Yvan,

My apologies for replying late. Your suggestion works like a charm, the stress is now continuous at restart.

Thank you for your help,
Regards,
Cedric

Dear users / developpers, I am running version 4.0.4, LES of a periodic channel flow. I monitor the stress at the wall (output in the listing). I have set ineedf=1 in the subroutine usipes. I compute the wall stress in cs_f_user_extra_operations, following the examples provided (cs_user_extra_operat...

Dear Yvan,

Your solution seems to work like a charm. And while waiting for converged results, I will look at the theory documentation, see if i can build something more optimized.

Thank you for your help,
Best regards,
Cedric

Dear users, developpers, I am trying to compute the moments (mean and variance) of the velocity gradient. Following the examples, in cs_user_time_moments, I am using cs_time_moment_define_by_func to use a function which compute the velocity gradient. But there is a problem : the gradient is defined ...