# The zero surface tension limit of two-dimensional water waves

Research output: Contribution to journalArticle

### Abstract

We consider two-dimensional water waves of infinite depth, periodic in the horizontal direction. It has been proven by Wu (in the slightly different nonperiodic setting) that solutions to this initial value problem exist in the absence of surface tension. Recently Ambrose has proven that solutions exist when surface tension is taken into account. In this paper, we provide a shorter, more elementary proof of existence of solutions to the water wave initial value problem both with and without surface tension. Our proof requires estimating the growth of geometric quantities using a renormalized arc length parametrization of the free surface and using physical quantities related to the tangential velocity of the free surface. Using this formulation, we find that as surface tension goes to 0, the water wave without surface tension is the limit of the water wave with surface tension. Far from being a simple adaptation of previous works, our method requires a very original choice of variables; these variables turn out to be physical and well adapted to both cases.

Original language English (US) 1287-1315 29 Communications on Pure and Applied Mathematics 58 10 https://doi.org/10.1002/cpa.20085 Published - Oct 2005

### Fingerprint

Water waves
Water Waves
Surface Tension
Surface tension
Zero
Initial value problems
Free Surface
Initial Value Problem
Arc length
Parametrization
Existence of Solutions
Horizontal
Formulation

### ASJC Scopus subject areas

• Mathematics(all)
• Applied Mathematics

### Cite this

The zero surface tension limit of two-dimensional water waves. / Ambrose, David M.; Masmoudi, Nader.

In: Communications on Pure and Applied Mathematics, Vol. 58, No. 10, 10.2005, p. 1287-1315.

Research output: Contribution to journalArticle

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