Dynamics of steep two-dimensional gravity-capillary solitary waves

Paul A. Milewski, J. M. Vanden-Broeck, Zhan Wang

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Abstract

In this paper, the unsteady evolution of two-dimensional fully nonlinear free-surface gravity-capillary solitary waves is computed numerically in infinite depth. Gravity-capillary wavepacket-type solitary waves were found previously for the full Euler equations, bifurcating from the minimum of the linear dispersion relation. Small and moderate amplitude elevation solitary waves, which were known to be linearly unstable, are shown to evolve into stable depression solitary waves, together with a radiated wave field. Depression waves and certain large amplitude elevation waves were found to be robust to numerical perturbations. Two kinds of collisions are computed: head-on collisions whereby the waves are almost unchanged, and overtaking collisions which are either almost elastic if the wave amplitudes are both large or destroy the smaller wave in the case of a small amplitude wave overtaking a large one.

Original languageEnglish (US)
Pages (from-to)466-477
Number of pages12
JournalJournal of Fluid Mechanics
Volume664
DOIs
StatePublished - Dec 10 2010

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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