Natural circulation through duct.
I'm currently engaged in my master thesis and right now i'm trying to learn openFoam. Currently my simulations crashe due to some time continuity which i think is related to the pressure.
I have a large mesh a duct approx 10 m by 30m which gets narrower at the top. All walls are adiabatic except one that has a higher temperature then the ambient temperature and i am trying to get natural circulation of the air through the duct which is open att the top and bottom.
Any suggestion the boundary conditions for the pressures?
Im using buoyantBoussinesqSimpleFoam.
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