I am giving the sample geometry. Then meshing needed to be made so that it could dynamically adjust the motion of the cylinder rotationally oscillating about its axis.
cylinder square side 1m
height of domain 60 m
upstream dimension 20 m
downstream dimension 40 m
You can alter/modify the domain dimension to get particular results.
Then 3D simulations need to be carried out preferably LES at different flow parameters:
Reynolds number 1000
Frequency ratio: 0.8 (ratio of forcing frequency to natural vortex shedding frequency)
Maximum oscillation amplitude 20
Affect on Coefficient of drag
Affect on Coefficient of lift
understanding the velocity contours