CFD-Example 4: Flow around a cylinder

This example shows the transient flow around a cylinder with a fixed velocity in the blower stream. The Reynolds number in blower stream is constant with RE=150. In this case unsteady vortices appear behind the cylinder. 

The Strouhal number defined by d/(u T) with diameter d, velocity u and the oscillation period T, has a value 0.2, which is the exact value of the theoretical solution.