Variable Density with Frozen Rotor module

[hyder4]

Hello Developers,
I am running a closed cavity case with variable density (using ideal gas) to model free convection. Do I need to add any extra terms in the momentum equation to make it work ?
For example when solving the same problem with constant density I use Boussinesq approximation and add the following term in the momentum equation which works fine.

Boussinesq approximation.PNG

Boussinesq approximation.PNG

(6.28 KiB) Not downloaded yet

May I also ask what equations Code_saturne is resolving in frozen rotor module?
It will also be helpful to point out the subroutines it uses in frozen rotor.

[hyder4]

Hi,
I was wondering if there is any update on this?
Best regards,
Hyder.

[Yvan Fournier]

Hello,

Not many people on this forum seem to be familiar with this module/option (and I am not too sure of the theory regarding "frozen rotor", compared to the more costly but more explicit "transient" option.

In any case, to find the functions which are called here, "grep" is your friend.

Best regards,

Yvan