Video 11. Karman vortex street in the flow past a semi-circle. Compare with Video 10 and notice which has a wider wake (hence greater drag).
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15
These videos, all available on YouTube, are demonstrated in the introductory lecture for the module on separated flows, MSc in Advanced Computational Methods for Aeronautics, Department of Aeronautics, Imperial College London.