THERMAL SCIENCE

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Jin-Song Hu

,

Jia-Jia Li

,

Xi Wang

NEW HIGH-ORDER CONSERVATIVE DIFFERENCE SCHEME FOR REGULARIZED LONG WAVE 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(τ + h4). The scheme is a linear system of equations solved without iteratio. 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
RLW equation, conservative difference scheme, Richardson extrapolation, stability, convergence
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
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2019, VOLUME 23, ISSUE Supplement 3, PAGES [S737 - S745]
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New high-order conservative difference scheme for regularized long wave equation with Richardson extrapolation

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