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Peaked Stokes waves as solutions of Babenko's equation

Spencer Locke, Dmitry E. Pelinovsky

Abstract

Babenko's equation describes traveling water waves in holomorphic coordinates. It has been used in the past to obtain properties of Stokes waves with smooth profiles analytically and numerically. We show in the deep-water limit that properties of Stokes waves with peaked profiles can also be recovered from the same Babenko's equation. In order to develop the local analysis of singularities, we rewrite Babenko's equation as a fixed-point problem near the maximal elevation level. As a by-product, our results rule out a corner point singularity in the holomorphic coordinates, which has been obtained in a local version of Babenko's equation.

Peaked Stokes waves as solutions of Babenko's equation

Abstract

Babenko's equation describes traveling water waves in holomorphic coordinates. It has been used in the past to obtain properties of Stokes waves with smooth profiles analytically and numerically. We show in the deep-water limit that properties of Stokes waves with peaked profiles can also be recovered from the same Babenko's equation. In order to develop the local analysis of singularities, we rewrite Babenko's equation as a fixed-point problem near the maximal elevation level. As a by-product, our results rule out a corner point singularity in the holomorphic coordinates, which has been obtained in a local version of Babenko's equation.

Paper Structure

This paper contains 4 theorems, 28 equations.

Key Result

Theorem 1

Assume that Babenko's equation (Babenko) in the deep-water limit $h \to \infty$ admits a solution with the local behavior where $\beta \in (0,1]$ for some admissible values of $A > 0$ and $c \in \mathbb{R}$. Then, $\beta = \frac{2}{3}$.

Theorems & Definitions (11)

  • Theorem 1
  • Theorem 2
  • Remark 1
  • Remark 2
  • Remark 3
  • Remark 4
  • Lemma 1
  • proof
  • Lemma 2
  • proof : Proof of Theorem \ref{['theorem-1']}
  • ...and 1 more