Stokes waves revisited: exact solutions in the asymptotic limit

Megan Davies, Amit K. Chattopadhyay

Research output: Contribution to journalArticle

Abstract

The Stokes perturbative solution of the nonlinear (boundary value dependent) surface gravity wave problem is known to provide results of reasonable accuracy to engineers in estimating the phase speed and amplitudes of such nonlinear waves. The weakling in this structure though is the presence of aperiodic “secular variation” in the solution that does not agree with the known periodic propagation of surface waves. This has historically necessitated increasingly higher-ordered (perturbative) approximations
in the representation of the velocity profile. The present article ameliorates this long-standing theoretical insufficiency by invoking a compact exact n-ordered solution in the asymptotic infinite depth limit, primarily based on a representation structured around the third-ordered perturbative solution, that leads to a seamless extension to higher-order (e.g., fifth-order) forms existing in the literature. The result from this study is expected to improve phenomenological engineering estimates, now that any desired higher-ordered expansion may be compacted within the same representation, but without any aperiodicity in the spectral pattern of the wave guides.
Original languageEnglish
Article number69
Number of pages5
JournalThe European Physical Journal: Special Topics
Volume131
Issue number3
Early online date28 Mar 2016
DOIs
Publication statusE-pub ahead of print - 28 Mar 2016

Bibliographical note

The final publication is available at Springer via http://dx.doi.org/10.1140/epjp/i2016-16069-7

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