[Mohammad.A]

Hello Foamers,
I am new in Openfoam, For my case study I want to simulate Natural Convection in a simple cavity with chtMultiRegionSimpleFoam solver I have realized that chtMultiRegionSimpleFoam does not support Boussinesq approximation so what should I do?
Best,
Mohammad.

[Alczem]

Hey!


It is possible! You can change the equationOfState field to Boussinesq in the thermophysicalProperties file (if you are using the ESI version). You then need to add a subdictionary equationOfState with the appropriate fields related to the Boussinesq approximation (plenty of detail online).

[Mohammad.A]

Originally Posted by Alczem

Hey!


It is possible! You can change the equationOfState field to Boussinesq in the thermophysicalProperties file (if you are using the ESI version). You then need to add a subdictionary equationOfState with the appropriate fields related to the Boussinesq approximation (plenty of detail online).

Hello Alczem,
Thank you so much. I have tried that method but I could not set my case properly. Do you have any case study about changing equationOfState field to Boussinesq?
Best,
Mohammad.

[Alczem]

Hey,


You can check out this link:


https://doc.cfd.direct/openfoam/user...thermophysical


It describes how to use the different equationOfState models. You can easily find examples online too, a lof of threads on this forum have discussed this.

[Mohammad.A]

Originally Posted by Alczem

Hey,


You can check out this link:


https://doc.cfd.direct/openfoam/user...thermophysical


It describes how to use the different equationOfState models. You can easily find examples online too, a lof of threads on this forum have discussed this.

Hi,
Thank you so much Alczem.
Mohmmad,