dynamic mesh with zone mesh
 

Dear all, I want to simulate flow induced vibration of circular cylinders. I have the following question:

I made my case according to the wingMotion tutorial with pimpleDyMFoam solver. The computational grid is arranged like this: in the vicinity of the cylinder, structured mesh is used the resolve the boundary layer and all these grid moving along with the cylinder(with the same velocity); Out of the structured mesh is unstructured mesh where the mesh deformation takes place. How to set these two zones in OpenFoam(I'm using 2.2.2)?