Small-amplitude Stokes and solitary gravity water waves with an arbitrary distribution of vorticity
Author
Summary, in English
This paper presents an existence theory for small-amplitude Stokes and solitary-wave solutions to the classical water-wave problem in the absence of surface tension and with an arbitrary distribution of vorticity. The hydrodynamic problem is formulated as an infinite-dimensional Hamiltonian system in which the horizontal spatial coordinate is the time-like variable. A centre-manifold technique is used to reduce the system to a locally equivalent Hamiltonian system with one degree of freedom for values of a dimensionless parameter a near its critical value alpha*. The phase portrait of the reduced system contains a homoclinic orbit for alpha < alpha* and a family of periodic orbits for alpha > alpha*; the corresponding solutions of the water-wave problem are respectively a solitary wave of elevation and a family of Stokes waves. (c) 2008 Elsevier B.V. All rights reserved.
Department/s
- Mathematics (Faculty of Sciences)
- Partial differential equations
Publishing year
2008
Language
English
Pages
1530-1538
Publication/Series
Physica D: Nonlinear Phenomena
Volume
237
Issue
10-12
Document type
Journal article
Publisher
Elsevier
Topic
- Mathematics
Keywords
- bifurcation theory
- water waves
- vorticity
Status
Published
Research group
- Partial differential equations
ISBN/ISSN/Other
- ISSN: 0167-2789