Hi, I use code_saturne 4.3 and as part of my thesis I would like to use it to simulate air flow on the rough wall with turbulence model Rij-epsilon SSG. I have two questions about this:
_what are the boundary conditions for the Rij-epsilon model for the rough wall? I don't find this information on the documation.
_ what are the stability criteria provided by code_saturne?
Thanks for any help.
Boundary condition Rij-epsilon SSG
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Yvan Fournier
- Posts: 4208
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Re: Boundary condition Rij-epsilon SSG
Hello,
I'll let the specialists answer for the boundary conditions (especially as there have been recent updates in 5.0 relative to this).
I'm not sure I understand the question relative to stability criteria. As the time-stepping is semi-implicit, CFL and Fourier numbers may apply, but the code usually converges even when they are not strictly followed (though it may diverge when the CFL becomes too high; 5 to 20 is usually not too risky).
Best regards,
Yvan
I'll let the specialists answer for the boundary conditions (especially as there have been recent updates in 5.0 relative to this).
I'm not sure I understand the question relative to stability criteria. As the time-stepping is semi-implicit, CFL and Fourier numbers may apply, but the code usually converges even when they are not strictly followed (though it may diverge when the CFL becomes too high; 5 to 20 is usually not too risky).
Best regards,
Yvan