An example of 2D viscous flow around a simple solid boundary. A solid cylinder is impulsively started at the right of a channel bounded by solid walls with a slip boundary condition.
Adaptive refinement is used based on the vorticity.
After an initial growth phase, a classical Bénard–von Kárman vortex street is formed.
Figure 75: Strouhal number versus Reynolds number. Comparison between static (reference) and moving problem. 
