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Formation of quasistationary vortex and transient hole patterns through vortex merger
2002
Physics of Plasmas
Collection of point-like intense vortices arranged symmetrically outside of a uniform circular vortex patch, both enclosed in a free-slip circular boundary, are numerically time evolved for up to 10-15 patch turnover times. These patterns are found to merge with the patch by successively inducing nonlinear dispersive modes (V-states͒ on the surface of the patch, draw off fingers of vorticity ͑filamentation͒, trap the irrotational regions as the fingers symmetrize under the shear flow of the
doi:10.1063/1.1513154
fatcat:7ycxmil2hbg3rjvutey2pj255i