[azdin.atrass]

Hello everyone!
I am new on fluent. I am trying to simulate a simple flow around a cylinder with round corners and uniform boundary conditions (ux=1, periodic condition on boundary wall and no slip on the cylinder, pressure on the output...Re=22000) but I am obtaining some unreliable result, in fact the Cl vs time graph is somehow exponentially increasing and I know that it should assume a statistically steady behaviour. Do you have any idea on where the problem could be? Thank you in advance.