[Tremore]

I performed I simulation of a VAWT, using ANSYS CFX with the following data:

BLADES
NACA0018
0,5m coord
Set angle 0°

ROTOR blades
Diameter: 5m

SIMULATION TYPE
quasi 2D (5mm thin regions)
TSR: 3,8
INLET wind speed: 11 m/S
INTERFACE: rotating-static: STAGE.

MESH
300 000 elements: fitted near the blades(expecially in TE) and near the interface.

Everything look go in the right way , the solution goes at convergence in about 1500 interations but the results seems be completely wrongs.
if you Look at the velocity vectors:
Velocity vector.jpg
https://docs.google.com/file/d/0B81t...it?usp=sharing

and the pressure have a big step in the trasition beetween static and rotating domain:
pressure.jpg
https://docs.google.com/file/d/0B81t...it?usp=sharing


Someone have some idea why I have this kind of results?

Thank you in advance