Steady point vortices in a field of Stuart-type vorticity
Duration: 35 mins 45 secs
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Description: |
Krishnamurthy, V
Thursday 12th September 2019 - 15:00 to 15:30 |
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Created: | 2019-09-12 15:46 |
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Collection: | The complex analysis toolbox: new techniques and perspectives |
Publisher: | Isaac Newton Institute |
Copyright: | Krishnamurthy, V |
Language: | eng (English) |
Abstract: | 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. |
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