modification for rotating cylinder simulation

zonexo

Hi,

i've run a 2d flow past a circular cylinder and the drag/recirculation values are quite good.

i tried to modify it to simulate a rotating/spinning cylinder. i believe i only need to change the boundary velocity and nothing else. is that so?

i tried to run the simulation for different angular velocities at Re=20. the velocity vector plots seem correct compaared to the published one. cd & the viscous lift force are quite good. however, the lift force due to pressure is always about 55-65% of the correct results.

i wonder what's wrong. Did i miss out something? is there any modification required at the post processing stage?

tks in advance