code_saturne User's Forum

Hello,

I am currently working on a case where I want to obtain results in Steady state

I heard that Pseudo Steaty State Algorithm should be the best in CS

When I check results on Paraview, I see that CFL & Fourier numbers reached their limit in the majority of the domain, but without influence on convergence and results

So could you please explain me how the Pseudo Steady State algorithm works on CS, because I haven't found a lot of information on Saturne's documentations (time step factor, etc ...)

Thank you very much !

Best regards

Jeremy

Hello,

I do not have many details. Basically, this option uses o local time step, adapting it to try to have a CFL of 1 in each cell. This is initialized with the reference time step, and adjusted at each time step.

The min/max factors are there to avoid changing the time step values to rapidly. or going below or above a certain value.

Since the time step is local, results cannot be interpreted as a function of time, only as pseudo steady-state.

Best regards,

Yvan