Handling of continuous radial profiles in 2D units requires inlet per radial node

[jbreue16]

I would like to create a convergence test case with a smooth radial inlet gradient.
That however requires specifying an inlet for every node, which quickly becomes unfeasible under radial grid refinement.

I wonder if this is only relevant for convergence study or if this is also of interest from the applicational point of view.

Maybe we could implement some kind of radial inlet unit operation, which allows a radial profile? Im not sure if its worth the effort though.