Cylinder Multiblockmapping
 

I'm starting to use OpenFoam and i need to simulate a problem.
The problem requires the use of a cylinder mesh with a center in the shape of a box, something like this:
http://www.cfd-online.com/OpenFOAM_D...ges/1/4062.png

I'm using the OpenFOAM 2.1.1 somebody cold help me?

Thanks