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Interpolating element-free Galerkin method for the regularized long wave equation and its error analysis

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  • Sun, FengXin
  • Wang, JuFeng

Abstract

Combining the simplified interpolating moving least-squares (IMLS) method with the Galerkin weak form, an interpolating element-free Galerkin (IEFG) method is presented for the numerical study of the regularized long wave (RLW) equation. The trial function in the IMLS method has one less unknown coefficient than in the traditional MLS approximation, and the shape functions satisfy the interpolating property at nodes. Then the IEFG method can apply the essential boundary conditions naturally and directly, and has high computational accuracy. And then this paper studies the error estimates of the IEFG method for RLW equation. The error estimate of the semi-discrete IEFG method for the RLW equation on the influence domain radius is first studied, and then the convergence rate of the full discrete scheme of the method on the influence domain radius and time step is studied. The theoretical results show that the IEFG method for RLW equation has good convergence rate. For the purpose of demonstration, three selected numerical examples are given to demonstrate the method and the mathematical theory of this paper.

Suggested Citation

  • Sun, FengXin & Wang, JuFeng, 2017. "Interpolating element-free Galerkin method for the regularized long wave equation and its error analysis," Applied Mathematics and Computation, Elsevier, vol. 315(C), pages 54-69.
    • Handle: RePEc:eee:apmaco:v:315:y:2017:i:c:p:54-69
    DOI: 10.1016/j.amc.2017.07.052
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    References listed on IDEAS

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    1. Li, Xiaolin & Chen, Hao & Wang, Yan, 2015. "Error analysis in Sobolev spaces for the improved moving least-square approximation and the improved element-free Galerkin method," Applied Mathematics and Computation, Elsevier, vol. 262(C), pages 56-78.
    2. Li, Qinghua & Chen, Shenshen & Luo, Xinmei, 2017. "Steady heat conduction analyses using an interpolating element-free Galerkin scaled boundary method," Applied Mathematics and Computation, Elsevier, vol. 300(C), pages 103-115.
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    Cited by:

    1. Khater, Mostafa M.A., 2023. "Computational simulations of propagation of a tsunami wave across the ocean," Chaos, Solitons & Fractals, Elsevier, vol. 174(C).
    2. Sun, Fengxin & Wang, Jufeng & Xu, Ying, 2024. "An improved stabilized element-free Galerkin method for solving steady Stokes flow problems," Applied Mathematics and Computation, Elsevier, vol. 463(C).

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