An improvised technique of quintic hermite splines to discretize generalized Burgers–Huxley type equations

Iranian Journal of Numerical Analysis and Optimization

مقاله 16، دوره 13، شماره 1 - شماره پیاپی 24، خرداد 2023، صفحه 59-79   

نوع مقاله: Research Article

شناسه دیجیتال (DOI): 10.22067/ijnao.2022.75871.1120

نویسندگان

I. Kaur¹؛ S. Arora^{* 2}؛ I. Bala²

¹Chitkara University Institute of Engineering and Technology, Department of Applied Sciences, Chitkara University, Patiala, Punjab, INDIA.

²Department of Mathematics, Punjabi University, Patiala, Punjab-147002, INDIA.

چکیده

A mathematical collocation solution for generalized Burgers–Huxley and generalized Burgers–Fisher equations has been monitored using the weighted residual method with Hermite splines. In the space direction, quintic Hermite splines are introduced, while the time direction is dis-cretized using a finite difference approach. The technique is determined to be unconditionally stable, with order (h4 + △t) convergence. The tech-nique’s efficacy is tested using nonlinear partial differential equations. Two problems of the generalized Burgers–Huxley and Burgers–Fisher equations have been solved using a finite difference scheme as well as the quin-tic Hermite collocation method (FDQHCM) with varying impacts. The FDQHCM computer codes are written in MATLAB without transforming the nonlinear term to a linear term. The numerical findings are reported in weighted norms and in discrete form. To assess the technique’s appli-cability, numerical and exact values are compared, and a reasonably good agreement is recognized between the two.

کلیدواژه‌ها

Quintic Hermite splines؛ Forward finite difference scheme؛ col-location method؛ stability analysis

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