Abstract
The Hyperbolic Nonlinear SCHRÖDINGER equation (HypNLS) arises as a model for the dynamics of three–dimensional narrow-band deep water gravity waves. In this study, the symmetries and conservation laws of this equation are computed. The PETVIASHVILI method is then exploited to numerically compute bi-periodic time-harmonic solutions of the HypNLS equation. In physical space they represent non-localized standing waves. Non-trivial spatial patterns are revealed and an attempt is made to describe them using symbolic dynamics and the language of substitutions. Finally, the dynamics of a slightly perturbed standing wave is numerically investigated by means a highly accurate FOURIER solver.
Original language | British English |
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Pages (from-to) | 202-220 |
Number of pages | 19 |
Journal | Communications in Nonlinear Science and Numerical Simulation |
Volume | 57 |
DOIs | |
State | Published - Apr 2018 |
Keywords
- Deep water
- Gravity waves
- Ground states
- Hyperbolic equations
- NLS equation
- Wave patterns