Reynoldsnumber in cylinder2d

Hallo everybody,

i began to work with Palabos in last week.Here is my problem, ask for help.

1.I want to simulate a karman vortex street at reynoldsnumber 120. I used the showcase cylinder2d in Palabos. I changed reynoldsnumber to 120 but i got no karman vortex street.Are there any other parameters i should change?

2.In cylinder2d case with Re=600, i changed diameter of the cylinder to 0.02, i got also no karman vortex street.

Thanks for any help.