Numerical study of nonlinear generalized Burgers–Huxley equation by multiquadric quasi-interpolation and pseudospectral method
- Department of Mathematics, Central Tehran Branch, Islamic Azad University, Tehran, IR
- 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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