[jgrimshaw]

I am currently attempting to model flow around a stationary cylinder at a Re=200,000 using Fluent 14. However, after running my simulation it appears my solution is too steady as no vortex shedding occurs.
I am currently using the URANS solver coupled with the K-e turbulance model and have tried running the simulation.
I originally used a 1st order upwind scheme and left the Pressure - Velocity coupling as SIMPLE. I then changed this to a 2nd order upwind scheme and used the PISO to do the pressure - velocity coupling.
I have found my wall y+ value and applied the appropriate wall function to my simulation but in doing so i coarsened my mesh.

Does anybody have any suggestions on how to create instability in the flow and hence produce vortex shedding?