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New high-order conservative difference scheme for RLW equation with Richardson extrapolation

ABSTRACT
Numerical solution for the regularized long wave equation is considered by a new three-level conservative implicit finite difference scheme coupled with Richardson extrapolation which has the accuracy of O(τ2+h4). The scheme is a linear system of equations solved without iteration. The conservation properties of the algorithm are verified by computing the discrete mass and discrete energy. Existence and uniqueness of the numerical solution are proved. Convergence and stability of the scheme are also derived using energy method. The results of numerical experiments show that our proposed scheme is efficiency.
KEYWORDS
PAPER SUBMITTED: 2018-04-20
PAPER REVISED: 2018-07-28
PAPER ACCEPTED: 2018-10-11
PUBLISHED ONLINE: 2019-03-31
DOI REFERENCE: https://doi.org/10.2298/TSCI180420088H
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