Von Kármán Vortex Street

Re = --  |  St ≈ --
Von Kármán vortex street: alternating vortex shedding behind a cylinder at Re ≈ 40–1000. Strouhal number St = fD/U ≈ 0.2. Simulated via lattice-Boltzmann D2Q9 BGK. Click to reposition cylinder.