10.1007/s40096-022-00461-5

Numerical study of nonlinear generalized Burgers–Huxley equation by multiquadric quasi-interpolation and pseudospectral method

  1. Department of Mathematics, Central Tehran Branch, Islamic Azad University, Tehran, IR
  2. Department of Mathematics, Central Tehran Branch, Islamic Azad University, Tehran, IR Department of Computer Science, University of Calgary, Calgary, CA

Published in Issue 2022-03-11

How to Cite

Rahimi, M., Adibi, H., & Amirfakhrian, M. (2022). Numerical study of nonlinear generalized Burgers–Huxley equation by multiquadric quasi-interpolation and pseudospectral method. Mathematical Sciences, 17(4 (December 2023). https://doi.org/10.1007/s40096-022-00461-5

Abstract

Abstract This paper develops an efficient numerical meshless method to solve the nonlinear generalized Burgers–Huxley equation (NGB-HE). The proposed method approximates the unknown solution in the two stages. First, the θ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\theta$$\end{document} -weighted finite difference technique is adopted to discretize the temporal dimension. Second, a combination of the multiquadric quasi-interpolation and pseudospectral (denoted by MQQI-PS) is constructed to approximate the spatial derivatives. In addition, a cross-validation technique is used to find the shape parameter value. Finally, numerical results are illustrated to show the accuracy and efficiency of the MQQI-PS method.

Keywords

  • Nonlinear generalized Burgers–Huxley equation,
  • Multiquadric quasi-interpolation method,
  • Pseudospectral method,
  • θ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\theta$$\end{document}-Method

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