Soliton interaction with external forcing within the Korteweg–de Vries equation
Article
Article Title | Soliton interaction with external forcing within the Korteweg–de Vries equation |
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ERA Journal ID | 87 |
Article Category | Article |
Authors | Ermakov, Andrei (Author) and Stepanyants, Yury (Author) |
Journal Title | Chaos: an interdisciplinary journal of nonlinear science |
Journal Citation | 29 (1) |
Article Number | 013117 |
Number of Pages | 14 |
Year | 2019 |
Publisher | AIP Publishing |
Place of Publication | United States |
ISSN | 1054-1500 |
1089-7682 | |
Digital Object Identifier (DOI) | https://doi.org/10.1063/1.5063561 |
Web Address (URL) | https://aip.scitation.org/doi/abs/10.1063/1.5063561 |
Abstract | We revise the solutions of the forced Korteweg–de Vries equation describing a resonant interaction of a solitary wave with external pulse-type perturbations. In contrast to previous work where only the limiting cases of a very narrow forcing in comparison with the initial soliton or a very narrow soliton in comparison with the width of external perturbation were studied, we consider here an arbitrary relationship between the widths of soliton and external perturbation of a relatively small amplitude. In many particular cases, exact solutions of the forced Korteweg–de Vries equation can be obtained for the specific forcings of arbitrary amplitude. We use the earlier developed asymptotic method to derive an approximate set of equations up to the second-order on a small parameter characterising the amplitude of external force. The analysis of exact solutions of the derived equations is presented and illustrated graphically. It is shown that the theoretical outcomes obtained by the asymptotic method are in a good agreement with the results of direct numerical modeling within the framework of forced Korteweg–de Vries equation. |
Keywords | Surface waves; Soliton solutions; Korteweg-de Vries equation; Dynamical systems; Internal waves; Perturbation theory; Asymptotic analysis; Numerical methods |
ANZSRC Field of Research 2020 | 401207. Fundamental and theoretical fluid dynamics |
401204. Computational methods in fluid flow, heat and mass transfer (incl. computational fluid dynamics) | |
401208. Geophysical and environmental fluid flows | |
490199. Applied mathematics not elsewhere classified | |
Public Notes | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Chaos 29, 013117 (2019) |
Byline Affiliations | School of Agricultural, Computational and Environmental Sciences |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q564q/soliton-interaction-with-external-forcing-within-the-korteweg-de-vries-equation
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