Meshing a wing with a wind gallery
 

Hi all,
I have to mesh the fluid into a wind gallery around a wing. As you can see from the pictures the gallery is similar to a third of a cilinder.
This is what I've done:
- a block sorrund all the geometry
- some splits in order to isolate a block around the wing
- make an o-grid on the inner block in order to sourround the wing
- associate that block to the wing and the deleted him in order to have the whole with the geometry of the wing
- associate the remaining outer blocks to the gallery

As you can see from the quality of the mesh created there are some elements too much screwed. How can I improve their quality?

I've tried to:
- make an o grid on the inlet-outlet face, but doesn't work
- make an o-grid using the right and bottom edges (left and bottom on the other sides). That seems to work but generate others problem along the bottom of the domain.

Other tips? :confused: