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null (Ed.)The point vortex is the simplest model of a two-dimensional vortex with non-zero circulation. The limitations introduced by its lack of core structure have been remedied by using desingularizations such as vortex patches and vortex sheets. We investigate steady states of the Sadovskii vortex in strain, a canonical model for a vortex in a general flow. The Sadovskii vortex is a uniform patch of vorticity surrounded by a vortex sheet. We recover previously known limiting cases of the vortex patch and hollow vortex, and examine the bifurcations away from these families. The result is a solution manifold spanned by two parameters. The addition of the vortex sheet to the vortex patch solutions immediately leads to splits in the solution manifold at certain bifurcation points. The more circular elliptical family remains attached to the family with a single pinch-off, and this family extends all the way to the simpler solution branch for the pure vortex sheet solutions. More elongated families below this one also split at bifurcation points, but these families do not exist in the vortex sheet limit.more » « less
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Smith, Stefan G (, Fluid Dynamics Research)null (Ed.)
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Crowdy, Darren G.; Llewellyn Smith, Stefan G.; Freilich, Daniel V. (, European Journal of Mechanics - B/Fluids)null (Ed.)
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Llewellyn Smith, Stefan G.; Nagem, Raymond J. (, Regular and Chaotic Dynamics)null (Ed.)
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