Jacobi: error (divergence) solving for k

[HBELG]

Hello everyone,

I would like to know if anyone had this kind of error, I had it after 5hours and 46 minutes of calculations:

../../../../src/code_saturne-5.0.7/src/alge/cs_sles_it.c:4932: Fatal error.

Jacobi: error (divergence) solving for k

I have attached the listing file below

Thanks a lot for any answer,

[Yvan Fournier]

Hello,

You case is probably diverging, but it seems you reduced the logging (listing) output frequency, so we do not have details about intermediate time steps.

Could you re-run your computation with listing output frequency set to 1 ?

Regards,

Yvan

[HBELG]

Hello,

Thanks for your answer, and as requested here is the listing with an output every 1 step in the attached file, (and the error file).

[Yvan Fournier]

Hello,

It still seems the output frequency is different than 1 (I see NTLIST = 90) in the listing.

Check again under "calculation control/Output control/Log frequency" in the GUI (and check you do not have a setting which overwrites this in user source files if present).

Could you also attach your XML file ?

Regards,

Yvan

[HBELG]

Hello,

This calculation is for the same game, and for 10 iterations, I simplified, more my geometry, but still get the same ERROR, I have already generated with the same characteristics of mesh for other geometry and it works well, so I don't get this "Jacoby error",

I have attached files requested int he last reply,

Thanks for any answer, best regards

Houda

[Yvan Fournier]

Hello,

Your CFL number is already very high at the second iteration, so you probably have a much too large time step. There are also warnings about gradient non-convergence (a mesh issue) so using a least-squares gradient reconstruction (instead of iterative reconstruction) might help here.

Regards,

Yvan