Abstract
In this paper, we analyze the stability of a high-order finite-difference scheme for the Korteweg–de Vries (KdV) equation with non-homogeneous boundaries. We first employ a variable transformation to change the non-homogeneous boundaries to homogeneous boundaries. We then develop a fourth-order accurate finite-difference scheme for solving the transformed KdV problem. The stability, convergence and solvability of the numerical solution are analyzed. Numerical examples are given to confirm the good accuracy and the effectiveness of the present method for handling the KdV equations with non-homogeneous boundaries.
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The authors were supported in part supported by the Natural Science Foundation of Fujian Province, China (No: 2020J01796). The authors also thank the reviewers and editors for their very helpful comments and suggestions which greatly improved the quality of this paper.
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Communicated by Corina Giurgea.
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Cheng, H., Wang, X. Stability analysis of a high-order finite-difference scheme for the Korteweg–de Vries equation with non-homogeneous boundaries. Comp. Appl. Math. 40, 49 (2021). https://doi.org/10.1007/s40314-021-01443-4
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DOI: https://doi.org/10.1007/s40314-021-01443-4