Hello,
In most of our verification cases, we obtain 2nd order convergence, so your results are a bit surprising.
Did you test using the default centered scheme ? SOLU is somewhat more robust, not more precise.
Also, what type of mesh are you using ?
Regards,
Yvan
Search found 4080 matches
- Tue Dec 19, 2023 1:20 pm
- Forum: code_saturne usage
- Topic: Convergence study in Code_Saturne
- Replies: 9
- Views: 264260
- Mon Dec 18, 2023 3:25 pm
- Forum: code_saturne usage
- Topic: Cannot compile with GDAL
- Replies: 8
- Views: 90017
Re: Cannot compile with GDAL
Hello,
I mean When installing code_saturne.
Though you might first simply try passing those options when running as follows:
code_saturne compile --libs="-lgdal -Wl,--no-as-needed"
Best regards,
Yvan
I mean When installing code_saturne.
Though you might first simply try passing those options when running as follows:
code_saturne compile --libs="-lgdal -Wl,--no-as-needed"
Best regards,
Yvan
- Mon Dec 18, 2023 1:05 pm
- Forum: code_saturne usage
- Topic: Cannot launch GUI due to Qt error
- Replies: 6
- Views: 231723
Re: Cannot launch GUI due to Qt error
Hello, Running on a pure Linux machine should not change anything, and this seems to be a Qt install or version issue. Some forums recommend running with "QT_DEBUG_PLUGINS=1 " to get more debug info. Looking at those forums, causes for this issue vary, but a frequent cause is when multiple...
- Mon Dec 18, 2023 12:57 pm
- Forum: code_saturne usage
- Topic: Cannot compile with GDAL
- Replies: 8
- Views: 90017
Re: Cannot compile with GDAL
Hello, There may be another issue with Debian 11 and 12, which seems related to an incorrect behavior of the linker. If you add LDFLAGS=-Wl,--no-as-needed to you initial code_saturne configuration command, you might avoid the issue specific to Debian 12. I would need to automate a workaround, but th...
- Thu Dec 14, 2023 8:45 pm
- Forum: code_saturne usage
- Topic: Directed meshes from Star-CCM+ not working properly
- Replies: 2
- Views: 28612
Re: Directed meshes from Star-CCM+ not working properly
Hello, Looking at the directed file with a generic CGNS utility (cgnsview), it appears the boundary zone info is not present in the CGNS file, so your boundary conditions specify nonexistent zones, and BCs default to wall. Which explains why nothing happens in the simulation. So this is definitely e...
- Wed Dec 13, 2023 8:28 pm
- Forum: code_saturne usage
- Topic: Time step dependent mesh artefacts
- Replies: 1
- Views: 21331
Re: Time step dependent mesh artefacts
Hello, I am not familiar with the details of the Rhie & Chow implementation, though if you want to kook at it, you can search for/grep the "arak" variable in the source code (in the current dev branch, this is in src/base/cs_pressure_correction.c and cs_velocity_pressure.c). If you are...
- Wed Dec 13, 2023 8:16 pm
- Forum: Installation issues
- Topic: [SOLVED] KeyError: 'syrthes': Problem coupling Saturne 8.02/Syrthes5.0
- Replies: 3
- Views: 29411
Re: KeyError: 'syrthes': Problem coupling Saturne 8.02/Syrthes5.0
Hello,
For the Syrthes confing in code_saturne.cfg, you need to uncomment the line containing the Syrthes path. Hope that does the trick.
Best regards,
Yvan
For the Syrthes confing in code_saturne.cfg, you need to uncomment the line containing the Syrthes path. Hope that does the trick.
Best regards,
Yvan
- Wed Dec 13, 2023 8:13 pm
- Forum: code_saturne usage
- Topic: Cannot launch GUI due to Qt error
- Replies: 6
- Views: 231723
Re: Cannot launch GUI due to Qt error
Hello, Since info on running under WSL is a bit "spread out", I suggest a check list : - First, did you export your display (and run an X11 server) ? Running export DISPLAY=:0 in the terminal from whihc you launch code_saturne should be enough, if you do have an X-server running. Otherwise...
- Tue Dec 12, 2023 3:42 pm
- Forum: code_saturne usage
- Topic: Output forces on surface
- Replies: 30
- Views: 1569542
Re: Output forces on surface
Hello, OK, I obtain results similar to yours using the constant time step option. To avoid divergence, I need either to reduce the number of MPI ranks (from 48 to 4 works,), or keep the number of MPI ranks but change linear solver options to ones that are less dependent on the partitioning (ie. Jaco...
- Mon Dec 11, 2023 7:44 pm
- Forum: code_saturne usage
- Topic: Output forces on surface
- Replies: 30
- Views: 1569542
Re: Output forces on surface
Hello,
OK thanks for the feedback. You can probably work around that restriction using an environment variable or forcing the --oversubscribe option in the MPI launch options, but that is OK. I will try to run the case on fewer processes on my side.
Best regards,
Yvan
OK thanks for the feedback. You can probably work around that restriction using an environment variable or forcing the --oversubscribe option in the MPI launch options, but that is OK. I will try to run the case on fewer processes on my side.
Best regards,
Yvan