Steady point vortices in a field of Stuart-type vorticity

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• Vikas Krishnamurthy (University of Vienna)
• Thursday 12 September 2019, 15:00-15:30
• Seminar Room 1, Newton Institute.

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CATW01 - The complex analysis toolbox: new techniques and perspectives

A new family of exact solutions to the two-dimensional steady incompressible Euler equation is presented. The solutions comprise two point vortices of unit circulation – a point vortex pair – embedded in a smooth sea of non-zero vorticity of “Stuart-type”. The solution is one of the simplest examples of a rich and diverse array of similar global equilibria of the Euler equation identified by the authors. We also examine the point vortex limit of these new Stuart-embedded point vortex equilibria which results in a two-real-parameter family of smoothly deformable asymmetric point vortex equilibria in an otherwise irrotational flow.

This talk is part of the Isaac Newton Institute Seminar Series series.

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