Grid refinement in 3D for surface mounted block flow


I wonder, if it is possible yet to make grid refinements in 3D!? It seems, that there are some libraries corresponding to 3D in the multigrid directory… if so, it would be nice, if someone has a small example, how to use it.
I am mainly interested in a flow around a surface mounted cube (and later more complex geometries based on stl files). Did anyone tried such a geometry yet and could give some hints?

Thanks in advance!


so as no one is replying I assume, that it is not possible yet… If it is on the roadmap, I wonder, if how the approach will be to define certain regions!? Is it planed to define refinement regions based on distances to selected surfaces or inside certain stl geometries!? Would be great!

Best Regards!