urgent- turbine Torque problem,,,
 

hi all,,,
I'm doing thesis about Vertical axis water turbine,,i use 2d modeling with MRF for it,,but unfortunately the torque are very small and not realistric,,,does anyone have any clue,,,what was wrong in my simulation??Is it because i use MRF???can u give me a tutorial link for the same problem???because I'm new in fluent,,,,

Thanks,,
Diffy