Unifrom convergence of a higher order finite element method on an exponentially graded Bakhvalov mesh for convection-diffusion problems possessing boundary layers

Document Type : Research Paper

Authors

Department of Mathematics, Visvesvaraya National Institute of Technology, Nagpur, 440010, India.

Abstract

In this article, we established the convergence of a $p^{th}$ order $( p \geq 1)$ finite element method on an exponentially graded Bakhvalov mesh for a convection-diffusion problem which posses boundary layer. Optimal uniform convergence order is obtained by a careful selection of the interpolation operator, considering the characteristics of the layers, allows the finite element method. Numerical results are presented to support the theoretical findings.

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Main Subjects



Articles in Press, Accepted Manuscript
Available Online from 15 June 2026
  • Receive Date: 07 March 2025
  • Revise Date: 04 May 2026
  • Accept Date: 06 June 2026