there have been a lot of good discussions abotu this on the forum and also it is well documented in the solidworks KB and technical reference.
1. we can't have the fluid spin your part in flow simulation. we can spin it and check for zero torque but that would be the closest that you'll get.
2. vertical turbines may not be a good fit for the way that rotating regions are done in flow simulation. generally i would recommend checking with the developers on this. if your'e thinking about buying flow simulation, that could be done by your reseller. if someone brought this type of problem to us to take on from a consulting perspective, we would do that check before taking the job.
3. the flow coming in radially is not likely a good fit for the "frozen rotor" approach that flow has. you really need a moving mesh type solution. but again, recommend confirming with the developers.