help to simulate wind turbine
 

hi to all
i want to simulate wind turbine with fluent.i wanna to calculate rpm after solution completed.
my question is what is the best meshing method good for this problem?

and when i use MRF or SMM i should define rotating velocity to turbine.but i want rotate turbine with wind force.
can i use 6dof solver for this problem? if yes how can i write udf for this?