mesh motion problem in open channel flow
 

Hi all!
I'm simulating a water wheel with open channel flow in transient mode.
At the beginning the area of the wheel is stopped and when the fluid hits the wheel I activated the mesh motion.

I create the interface between the moving and stationary zone.The problem is that when the wheel starts to spin, the area that is moving is detached from the rest of the channel, as you can see from the images.

I create the pattern in Solidworks, where the center of the Cartesian system matches with the center of the wheel.

When I import the pattern in ansys, the center of the wheel is moved from the axis of 1,6e-11 m in X and -0,45 e-11 m in Y.

Someone can help me? Thx