code_saturne User's Forum

Hello,

I checked with colleague and it seems someone is working on this at the university of Manchester, but this has never been usable in the main code repository.

Best regards,

Yvan

Hello Tomaso, Could you provide more details on where the extrusion occurs ? Also, If you are working with Pr Behbahani, you certainly have my contact, so you can send me an e-mail and we can try to organize a short call to suggest options. For your sort of application (and meshes I have seen with y...

Hello, Yes, in the equation parameters, if you leave the default gradient selection to "global", the usual setting is used. But ylu can now override the option on a "per variable" basis which can be interesting in some cases. It can for exemple be useful to apply more robust opti...

Hello,

Do you have the postprocessing for the instantaneous velocity and pressure gradient fields ? You may need to activate those first for the postprocessing of time averages to work, since these fields are not present by default.

Best regards,

Yvan

Hello, We do not have access to a Cray machine, though code_saturne has been run regularly at least on the Archer 2 machine by several researchers. There have been a succession of changes in the RSM models in the last year, many of them oriented towards trying to avoid or reduce clippings, and I did...

Hello, Yes, v8.3 is missing the features for this, though you could do a time average of the matching field ("boundary_forces", which is intensive, i.e. a total force per face and not per unit surface), and divide each final value by its surface. In v9.0 beta, we have just changed this, so...

Hello, Yes, the time moments mechanism is designed to handle any type of field, and can work on boundary face-based fields such as y+, but this is still available only through coding in cs_user_parameters/cs_user_time_moments. THere are examples (though not for y+) here https://www.code-saturne.org/...

Hello, No, unless you specifically define a time average for post-processing, which will lead to a specific (addional) output, the "main" post processing output is the value at the output time step. Depending on you mesh, boundary conditions, and numerical options, the solution can converg...

Hello,

I'll try to remember to check with Jean-François to confirm, but yes, I think you cluld try the same sort of approach here.

Best regards,

Yvan

Hello, I just talked with the colleague who implemented the model, and the short answer is "yes". Apparently, tha model needs both an estimation of the cell span (which can be approximated using a cubic root of the volume), and a stricter test of the longest span, for near wall cells with ...