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!