Fitted cubic spline in tension difference scheme for two-parameter singularly perturbed delay parabolic partial differential equations

Autor: Naol Tufa Negero
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Partial Differential Equations in Applied Mathematics, Vol 8, Iss , Pp 100530- (2023)
Druh dokumentu: article
ISSN: 2666-8181
DOI: 10.1016/j.padiff.2023.100530
Popis: A numerical study of a two-parameter singularly perturbed time-delay parabolic equation has been initiated. The proposed technique is based on a fitted operator finite difference scheme. The first step involves the discretization of the time variables using the Crank–Nicolson method. This results in singularly perturbed semi-discrete problems, which are further discretized in space using the exponentially fitted tension-spline finite difference method. The error analysis is carried out. It is shown to be parameter-uniformly convergent and second-order accurate. To support the theoretical results, numerical experiments are carried out by applying the proposed technique to two test examples.
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