期刊论文详细信息
BMC Research Notes
Exponentially fitted numerical method for solving singularly perturbed delay reaction-diffusion problem with nonlocal boundary condition
Research Note
Mesfin M. Woldaregay1  Getu M. Wondimu1  Tekle G. Dinka1  Gemechis F. Duressa2 
[1] Applied Mathematics Department, Adama Science and Technology University, Adama, Ethiopia;Mathematics Department, Jimma University, Jimma, Ethiopia;
关键词: Singularly perturbed problem;    Reaction-diffusion problem;    Nonlocal boundary condition;    Primary 65L11;    65L12;    65L20;    65L70;   
DOI  :  10.1186/s13104-023-06347-6
 received in 2022-10-07, accepted in 2023-04-28,  发布年份 2023
来源: Springer
PDF
【 摘 要 】

ObjectivesIn this article, a singularly perturbed delay reaction-diffusion problem with nonlocal boundary conditions is considered. The exponential fitting factor is introduced to treat the solutions inside the boundary layer which occur due to perturbation parameter. The considered problem has interior layer at s=1\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$s = 1$$\end{document} and strong boundary layers at s=0\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$s = 0$$\end{document} and s=2\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$s= 2$$\end{document}. We proposed an exponentially fitted finite difference method to solve the considered problem. The nonlocal boundary condition is treated using Composite Simpson’s 13\documentclass[12pt]{minimal}\usepackage{amsmath}\usepackage{wasysym}\usepackage{amsfonts}\usepackage{amssymb}\usepackage{amsbsy}\usepackage{mathrsfs}\usepackage{upgreek}\setlength{\oddsidemargin}{-69pt}\begin{document}$$\frac{1}{3}$$\end{document} rule.ResultThe stability and uniform convergence analysis of the proposed approach are established. The error estimation of the developed method is shown to be second-order uniform convergent. Two test examples were carried out to validate the applicability of the developed numerical method. The numerical results reflect the theoretical estimations.

【 授权许可】

CC BY   
© The Author(s) 2023

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