Water won't pass through channel, and how to make a rotor stay on its place while it spins? I am a Dutch engineering student, normally I use Inventor, solidworks or autocad to make 3D designs.

Now I have to make some sort of a water turbine and I gotta simulate the spinning of the rotor itself. Well, now I haven't used Blender yet, I just downloaded it and I am struggling with everything. 

I want to make some sort of a channel to let the water flow through on the rotor. But it got blocked by some sort of an invisible wall and I don't know how to fix it or what I've done wrong...

Here's the link to a video, which makes it more clear.

Also I would like to know how to fixate a rotor and let it spin because of the water. 

Please let me know how to fix this and what causes the problem. And how I can make the rotor work.

Here is the .blend file itself:
From just looking at the image without examining the file, it looks like you didn't make your water domain big enough. Is the water domain object covering the entire channel unit?