Journal of Applied Mathematics and Computing

, Volume 59, Issue 1–2, pp 207–225 | Cite as

Parameter-uniform numerical method for singularly perturbed 2D delay parabolic convection–diffusion problems on Shishkin mesh

  • Abhishek Das
  • Srinivasan NatesanEmail author
Original Research


In this article, we study the numerical solution of a singularly perturbed 2D delay parabolic convection–diffusion problem. First, we discretize the domain with a uniform mesh in the temporal direction and a special mesh in the spatial directions. The numerical scheme used to discretize the continuous problem, consists of the implicit-Euler scheme for the time derivative and the classical upwind scheme for the spatial derivatives. Stability analysis is carried out, and parameter-uniform error estimates are derived. The proposed scheme is of almost first-order (up to a logarithmic factor) in space and first-order in time. Numerical examples are carried out to verify the theoretical results.


Singularly perturbed 2D delay parabolic problems Boundary layers Upwind scheme Piecewise-uniform Shishkin mesh Uniform convergence 

Mathematics Subject Classification

65M06 65M12 


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Copyright information

© Korean Society for Computational and Applied Mathematics 2018

Authors and Affiliations

  1. 1.Faulty of Science and TechnologyICFAI UniversityAgartalaIndia
  2. 2.Department of MathematicsIndian Institute of TechnologyGuwahatiIndia

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