code_saturne User's Forum

Hi Yvan,

I’m trying to output the pressure on my structure’s boundary surfaces, but when I follow the instructions in the post it doesn’t show any pressure variables. I understand the normal stress may be similar to pressure, but should we use the normal stress as the pressure, or is there a way to ...

Dear Yvan,

I would like to clarify how steady and unsteady RANS are selected in Code_Saturne. Am I correct that choosing Constant or Adaptive time step corresponds to unsteady simulations, while Steady (local time step) corresponds to a steady simulation (But why does the Steady option still ...

Hi Yvan,

Thanks for your reply. Do you have any example using cs_divergence?

I implemented it based on the general documentation from the source file, but the simulation freezes at the first step and stops with the following error:

SIGSEGV signal (forbidden memory area access) intercepted!
Call ...

Hi Yvan,

Thank you for your suggestions. Applying a relaxation factor to progressively add the source term seems to help, but I still observe a slow temperature increase throughout the domain.

Since the previous implementation used a non-conservative form—which can introduce numerical bias—I’d ...

Hi Yvan,

I was wondering whether it is now feasible in code_saturne version 8.0 to restart from a specific restart checkpoint — for example, from the second one (2/4) — rather than defaulting to the latest available checkpoint. Thanks.

Best regards,
Ximeng

Hi Yvan,

Thanks.

I can use a single cs_user_postprocess_probes function, but the issue is that I want the outputs to be separate files. Since the number of probes is very large, combining all the data into one file results in a huge output, making postprocessing difficult and inefficient.

Best ...

Hi Team,

I'm currently using the cs_user_postprocess_monitors.c file to set up probes and collect their data, as I have a large number of monitors (please see the attached screenshot for reference).

I was wondering if it's possible to use multiple cs_user_postprocess_monitors.c files to generate ...

Hi Yvan,

Thanks for your suggestions. The code worked at the time, but for my new case, I’d like to take a more theoretical approach. Specifically, I aim to derive an analytical solution for the source term, based on Page 213 of
Franck Mastrippolito's thesis. (https://theses.fr/2018LYSEC043?domaine ...

Hi Yvan,

Thank you for your reply. I’m only using g_ii to display the total cell count across the entire domain, and it’s not used in any subsequent code or output, so I don’t think it’s related to the error. I removed this section and kept only a single output file, the same error still occurs. is ...

Hi Yvan,

Thanks for your suggestion! I’ve revised the code in parallel way to output cell volume for a specific zone at each time step (the attached code focuses on cell volume; a similar approach would apply to velocity). I’m using cs_parall_allgather_r to gather cell volume data across all ranks ...