Sorry, I forgot to mention.
with the given parameters v=5 mm/s inlet speed and 100 mm cylinder diameter
you get a vortex frequency of only 0,01 Hz (see definition of Strouhal-Number).
That means: to see one vortex, the simulation time must be at minimum 100 sec.
I increased the speed a little to get 1 Hz, but as I said above, pimplefoam crashed.