Boundary conditions for FreeFlow
We should rethink the way boundary conditions for the Navier-Stokes models are handled.
Versteeg and Malalasekera suggest the following boundary conditions:
- prescribed pressure
- periodicity (or cyclic boundary condition)
Until now, "outlet" and "prescribed pressure" are somehow combined into the "outflow" BC, which does not always make sense.
Should we adapt to these kind of fixed conditions or provide at least some convenience methods?
What do we need to consider for coupling to other domains?