code_saturne User's Forum

Hello, The code should exit more cleanly, so you may have encountered a minor bug, but by your "listing" file, you already have joining issues. The issue is probably more a mesh quality issue than a mesh format issue, but you need to check in more detail. So the first recommendation is to ...

Hello,

I wouldn't be too worried about the pressure at the first iteration: you're going from non-moving fluid to moving fluid in one time step, which is a sort of "non-physical" transient, so I'd avoid interpreting that part too much as long as things converge well.

Regards,

Yvan

Hello, I'll try to take a look withing a few days, but in any case, if you have joining issues, I recommend visualizing the output (postprocessing/JOINING.case, using "extract blocks" if under ParaView), to understand what is not working, and evaluate haow bad the situation might be... The...

Hello, Regarding the result, I'll let you choose whether you publish results or not. In any case, if you still have unexplained differences between 2.0 and 4.0 results, I'll try to take a look if you can publish the mesh and setup, though I'll do that as a "background task", so I probably ...

Hello, One possible issue I can think of is the fact that Code_Saturne often doesn't like non-orthogonal meshes near the outlet. I'll be working on an integrated extrusion feature later this month, but for now, your best bet may be to add one or two layers of "extruded" cells at the outlet...

Hello, I did not check your xml files in detail, so I'll ask if you have mesh joinings in your case ? If you do have mesh joinings, did you visualize the output to check that everything is joined correctly (viewing both he the joined parts and the remaining boundary after a mesh verification / mesh ...

Hello, This forum is useful fo feeback and recommendations for specific cases, but for the whole procedure, I remind you we have an installation manual on this web site: http://code-saturne.org/cms/sites/default/files/docs/4.0/install-4.0.pdf . We may also improve this documentation based on your fe...

Hello,

In the GUI, in addition to the "new file" option in the file menu, you have a "new case" option. This will create a case structure (same as "code_saturne create", using the GUI).

Regards,

Yvan

Hello, Yes, the RESU directory (or at least one run) would be most useful (at least the log files it contains, which should not be too large). If the problem is not a time step issue, it is probably a mesh quality or refinement issue. In this case, some options (additional sweeps, gradient reconstru...

Hello, Writing partitioning should not be the cause of your crashes. How much memory does your machine have ? On your largest mesh, if you happen to need "swap space" memory, then performance crawls, and you can get timeouts... Otherwise, do you have user subroutines ? Statistically, crash...