A higher order scheme for singularly perturbed delay parabolic turning point problem
ISSN: 0264-4401
Article publication date: 17 July 2020
Issue publication date: 8 February 2021
Abstract
Purpose
The purpose of this study is to construct and analyze a parameter uniform higher-order scheme for singularly perturbed delay parabolic problem (SPDPP) of convection-diffusion type with a multiple interior turning point.
Design/methodology/approach
The authors construct a higher-order numerical method comprised of a hybrid scheme on a generalized Shishkin mesh in space variable and the implicit Euler method on a uniform mesh in the time variable. The hybrid scheme is a combination of simple upwind scheme and the central difference scheme.
Findings
The proposed method has a convergence rate of order
Originality/value
A class of SPDPPs of convection-diffusion type with a multiple interior turning point is studied in this paper. The exact solution of the considered class of problems exhibit two exponential boundary layers. The theoretical results are supported via conducting numerical experiments. The results obtained using the proposed scheme are also compared with the simple upwind scheme.
Keywords
Acknowledgements
The first author wish to acknowledge UGC Non-NET Fellowships for financial support vide Ref.No. Sch./139/Non-NET/Exts53/2019–20/599.
Citation
Yadav, S. and Rai, P. (2021), "A higher order scheme for singularly perturbed delay parabolic turning point problem", Engineering Computations, Vol. 38 No. 2, pp. 819-851. https://doi.org/10.1108/EC-03-2020-0172
Publisher
:Emerald Publishing Limited
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