Numerical Approach for Differential-Difference Equations with Layer Behaviour

Authors

  • G. Sangeetha Department of Mathematics, Bhogi Reddy Engineering College for women, Hyderabad
  • G. Mahesh Department of Mathematics, Geethanjali College of Engineering and Technology, Cheeryal
  • K. Phaneendra Department of Mathematics, University College of Engineering, Osmania University, Hyderabad

DOI:

https://doi.org/10.26713/cma.v10i4.1309

Keywords:

Differential-difference equations, Boundary Layer, Non polynomial spline, Maximum absolute error

Abstract

A numerical scheme is proposed using a non polynomial spline to solve the differential-difference equations having layer behaviour, with delay as well advanced terms. The retarded terms are handled by using Taylor's series, subsequently the given problem is substituted by an equivalent second order singular perturbation problem. A finite difference scheme using non polynomial spline is derived and it is applied to the singular perturbation problem using non standard differences of the first derivatives. Tridiagonal algorithm is used to solve the resulting system. The method is exemplified on numerical examples with various values of perturbation, delay and advance parameters. Maximum absolute errors are computed and tabulated to support the method. Numerical solutions are pictured in graphs and the effects of small shifts on the boundary layer region has been investigated. Also, the convergence of the proposed method has also been established.

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Published

31-12-2019
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How to Cite

Sangeetha, G., Mahesh, G., & Phaneendra, K. (2019). Numerical Approach for Differential-Difference Equations with Layer Behaviour. Communications in Mathematics and Applications, 10(4), 851–863. https://doi.org/10.26713/cma.v10i4.1309

Issue

Vol. 10 No. 4 (2019)

Section

Research Article

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