Hi!

does anyone know a grid generator software, that can produce a mesh with hanging notes?

Ralf

ICEM CFD will produce such a mesh - when using block refinements for a block-structured hex mesh. I don't know for tets.

Hanging nodes are usually result of "h" or "p" or "hp" adaptation on regular mesh, so if u have a regular mesh, u can easily convert it to a mesh with hanging nodes, e.g. consider two neighbor linear quad element, if u refine one of them (split it into 4- childs, linear quads) u have one hanging node on shared face.

But if u like to have hanging node at first, e.g. grid is refined based on geometry curvature, u can use grid generators with such feature, the best one that i knowe (particulary for Hex element) is CUBIT: http://cubit.sandia.gov/