Combining strucutred grid and unstructured grid
 

Dear All,
I am trying to mesh a half wing in 3 dimensions. I have a boundary layer trip along the whole span at a distance of 0.5 feet from the leading edge. The thickness of the trip is very small and hence blocking is difficult for me. I was wondering whether there is any way to generate a structured grid for the whole wing portion and do a unstructured grid for the trip portion alone and combine the two meshes into a single mesh.