Add outflow BC to Richards FV local operator - part 2
As far as I remember, we don't have any outflow condition implemented to the Richards operators, this function was implemented for the transport case.
Correct. We use this option for an outflow BC in the Richards model, where it is a special case of a Dirichlet BC. This is a bit of a hack, and we don't want it to become part of the main code base like this. But !121 (merged) will rework the BC handling anyway and we can add a proper Richards outflow BC in a subsequent MR.