Density in the governing equations

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Ruonan
Posts: 136
Joined: Mon Dec 14, 2020 11:38 am

Density in the governing equations

Post by Ruonan »

Dear developers,

Could you please help to confirm the form of the momentum equation in Code_Saturne?



or



Because I want to add a centrifugal buoyancy source term in the momentum equation. I want to make sure whether to add or , depending on which form the momentum equation is.

Thank you!

Bonne journée,
Ruonan
Yvan Fournier
Posts: 4070
Joined: Mon Feb 20, 2012 3:25 pm

Re: Density in the governing equations

Post by Yvan Fournier »

Hello,

I do not think we use adimensioned equations, so the second option would be correct (though i invite you to check on a verification case with rho much greater that or much smaller than 1 once you have added your term).

I'll let others more expert in the numerical aspects of the code correct me if needed.

Best regards,

Yvan
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