Kármán vortex street
Repeating pattern of swirling vortices / From Wikipedia, the free encyclopedia
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In fluid dynamics, a Kármán vortex street (or a von Kármán vortex street) is a repeating pattern of swirling vortices, caused by a process known as vortex shedding, which is responsible for the unsteady separation of flow of a fluid around blunt bodies.[1]
It is named after the engineer and fluid dynamicist Theodore von Kármán,[2] and is responsible for such phenomena as the "singing" of suspended telephone or power lines and the vibration of a car antenna at certain speeds. Mathematical modeling of von Kármán vortex street can be performed using different techniques including but not limited to solving the full Navier-Stokes equations with k-epsilon, SST, k-omega and Reynolds stress, and large eddy simulation (LES) turbulence models,[3][4] by numerically solving some dynamic equations such as the Ginzburg–Landau equation,[5][6][7] or by use of a bicomplex variable.[8]