[maddalena]

Hello FOAMers,
is there someone that knows if a BC similar to Fluent's outflow BC has already been implemented in OpenFOAM?
Fluent's guide says that:

Outflow boundary conditions in FLUENT are used to model flow exits where the details of the flow velocity and pressure are not known prior to solution of the flow problem. You do not define any conditions at outflow boundaries (unless you are modeling radiative heat transfer, a discrete phase of particles, or split mass flow): FLUENT extrapolates the required information from the interior.

Can be ok setting U, k, epsilon as inletOutlet, inletValue $innerField and p as zeroGradient both at the inlet and at the outlet? Since U is directed to the external of the domain at the outlet, the inletOutlet BC will use U as zeroGradient, in such a way that both U and p are not fixed in that boundary.

Thanks in advance for comments and suggestions!

maddalena