Paper Title:

Numerical Solution of A System of Singularly Perturbed Convection-Diffusion Boundary-Value Problems Using Mesh Equidistribution Technique

Author(s):

Pratibhamoy Das and Srinivasan Natesan

Department of Mathematics,
Indian Institute of Technology Guwahati,
Guwahati - 781 039,
India.

pratibhamoy@gmail.com
natesan@iitg.ernet.in
URL: http://www.iitg.ernet.in/natesan/

Abstract:

In this article, we consider a system of singularly perturbed weakly coupled convection-diffusion equations having diffusion parameters of different magnitudes. These small parameters give rise to boundary layers. An upwind finite difference scheme on adaptively generated mesh is used to obtain a suitable monitor function that gives first-order convergence which is robust with respect to the diffusion parameters. We present the results of numerical experiments for linear and semilinear system of differential equations to support the effectiveness of our preferred monitor function obtained from theoretical analysis.

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