The adaptive mesh refinement (AMR) method is a common strategy for significant numerical investigations, including phenomena that have to be reasonably resolved (mesh density). Using the AMR functionality, OpenFOAM® allows one to refine only the regions of interest. This training case models a pseudo-2D situation, which means that the dynamic mesh refinement library from OpenFOAM® can only handle real 3D problems. It is worth to mention that a real 2D adaptive mesh refinement engine exists in the »blastFoam« library published by Synthetic Applied Technologies.