Simulating a rotating sphere, with axis of rotation normal to flow direction
 

what I did was set the boundary condition of the sphere wall as a moving wall with rotation and a rotational speed. when I ran the simulation I obtained a drag coefficient that is similar to experimental values, however my lift coefficient is significantly smaller, 10 times smaller. Is there any other setting that i need to do in fluent to make it work?

hi
 

Reference value tab enter the area of your sphere. hope it helps

Actually I did input the area. I eventually managed to find out what the problem was, it was probably due to the low mesh density that I was using since I was restricted to using not more than 500k mesh elements, and having to simulate a 3D football sized sphere, probably is the reason why there was a large error in the lift coefficient.