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Global Bifurcation of Steady Gravity Water Waves with Critical Layers

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If you have a question about this talk, please contact Mustapha Amrani.

Free Boundary Problems and Related Topics

I will present some recent results on the problem of two-dimensional travelling water waves propagating under the influence of gravity in a flow of constant vorticity over a flat bed. By means of a conformal mapping and an application of Riemann-Hilbert theory, the free-boundary problem is equivalently reformulated as a one-dimensional pseudodifferential equation which involves a modified Hilbert transform and, moreover, has a variational structure. Using the new formulation, existence is established, by means of real-analytic global bifurcation theory, of a family of solutions which includes waves of large amplitude, even in the presence of critical layers in the flow. This is joint work with Adrian Constantin and Walter Strauss.

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

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