Abstract
A high-order nonlinear conservative difference scheme method is proposed to solve a model of nonlinear dispersive equation: RLW-KdV equation. The existence of the solution was proved by the Brouwer fixed point theorem. The unconditional stability besides uniqueness of the difference scheme are also obtained. The convergence of the proposed method is proved to be fourth-order in space and second-order in time in the discrete \(L^{\infty }\)-norm. An application on the RLW equation is discussed numerically in detail. Furthermore, interaction of solitary waves with different amplitudes are shown. The three invariants of the motion are evaluated to show the conservation properties of the system. The temporal evaluation of a Maxwellian initial pulse is then studied. At last some numerical examples are reported to confirm the theoretical results.
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Communicated by Pierangelo Marcati.
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Rouatbi, A., Achouri, T. & Omrani, K. High-order conservative difference scheme for a model of nonlinear dispersive equations. Comp. Appl. Math. 37, 4169–4195 (2018). https://doi.org/10.1007/s40314-017-0567-1
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DOI: https://doi.org/10.1007/s40314-017-0567-1