code_saturne User's Forum

Hello,

Yes, code_saturne can build inflation layers, though the handling of "sliding" conditions for faces near to but not adjacent to extrusion layers needs to be improved.
This is not available yet in the GUI (for this reason), but has been available through user-defined functions for a while ...

Hello,

Replacing all settings in the code with a tree would be a huge undertaking, and to avoid possible performance issues, we will keep specific structures in many places. But the XML file is transformed into a simple tree when read, and if we can make this editable (which requires work due to ...

Hello,

To all: please keep conversations about installation in the installation section of the forum.

Regards,

Yvan

Hello,

Which version of the code are you using, and which linear solver are you using with multigrid (assuming you are using multigrid as a preconditionner, not as a solver) ?

Using default settings, this issue has mostly dissapeared on the computations that I am aware of. The main issue was that ...

Hello,

This question should be in the "installation isssues" section of the forum. Also, do not forget to follow each section's recommendations to save a few question/answer exchanges.

Regards,

Yvan

Hello,

Outlet boundary conditions tend to have a high sensitivity to mesh quality in code_saturne, so whether using tetrahedral meshes or even hexahadral meshes with cell warping at the outlet, the following options usually work well :

- Add one or two prism layers at the outlet using the code's ...

Hello,

I have checked with the colleague working on code_saturne/code_aster coupling, and have a few more details.

- Regarding "chained" computations, there is an exemple/test case here: https://codeaster.gitlab.io/doc/docaster/manuals/man_v/v1/v1.01.215/index.html

- Regarding the actual 2-way ...

Hello,

You could increase the logging and postprocessing frequency to get more info on field values when the code starts preventing backflow at the outlet, and a bit before the divergence occurs. Running with a debug build may also help detect some error categories earlier.

Note that v7.0 is not ...

Hello,

It seems you missed the attachment.

In any case, open boundary conditions are the trickiest. Although free inlet/outlet BC's are the correct BC to use, the GUI does not allow defining backflow conditions, so these must sometimes be completed with user-defined functions.

You should check ...

Hello,

This value is really an average, an depends on the network and processor speeds/balance, and number of nodes used. On a single node, scalabilty may be better, while on billion-cell cases running on thousands of cores, the optimum is often higher.

So for legacy FV, I always recommend ...