Structure and Stability of Streets of Finite Vortices

Abstract

Results are presented for the steady motion of finite cored uniform vortices in an incompressible perfect fluid. The cases of single vortices, vortex pairs, single rows and the staggered double row are considered. The stability of the flows to two-dimensional disturbances is examined. In particular, it is shown that finite area stabilises the Karman vortex street for a finite band of aspect ratio values about the Karman value of 0.281.

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