Numerical study of nonlinear wave processes by means of discrete chain models
Paper
Paper/Presentation Title | Numerical study of nonlinear wave processes by means of discrete chain models |
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Presentation Type | Paper |
Authors | Obregon, M. (Author), Raj, N. (Author) and Stepanyants, Y. (Author) |
Editors | Gu, Y. T. and Saha, Suvash C. |
Journal or Proceedings Title | Proceedings of the 4th International Conference on Computational Methods (ICCM 2012) |
Number of Pages | 8 |
Year | 2012 |
Place of Publication | Brisbane, Australia |
ISBN | 9781921897542 |
Web Address (URL) of Paper | http://www.ICCM-2012.org/ |
Conference/Event | 4th International Conference on Computational Methods (ICCM 2012) |
Event Details | 4th International Conference on Computational Methods (ICCM 2012) Event Date 25 to end of 28 Nov 2012 Event Location Gold Coast, Australia |
Abstract | We show that many nonlinear wave processes in dispersive and dissipative media can be numerically studied by means of chain models describable by sets of ODEs. This allows us to obtain higher accuracy results for relatively cheap price using standard ODE-solvers. The advantages of this approach in comparison with the direct numerical modeling of PDEs are: (i) the chain model has a vivid physical meaning and can be created in a laboratory in various embodiments playing a role of analogous computers; (ii) there is no need to develop a complex numerical scheme and study its stability and convergence. We demonstrate the idea in application to the modeling of solitary wave propagation in a rotating ocean described by the Gardner–Ostrovsky PDE using a modified Toda chain model. We show that our results are in a good agreement with approximate theoretical findings and early published data obtained from the direct numerical modeling of the Gardner–Ostrovsky PDE. |
Keywords | nonlinear waves; numerical modeling; Soliton; Ostrovsky equation; Toda chain |
ANZSRC Field of Research 2020 | 490410. Partial differential equations |
401706. Numerical modelling and mechanical characterisation | |
490109. Theoretical and applied mechanics | |
Public Notes | No evidence of copyright restrictions preventing deposit. |
Byline Affiliations | University of Malaga, Spain |
Department of Mathematics and Computing | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q1x7w/numerical-study-of-nonlinear-wave-processes-by-means-of-discrete-chain-models
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