| Volume 10, Number 3, 2020, Pages 830-841 DOI：10.11948/20180164 |
| Analysis of a DG method for singularly perturbed convection-diffusion problems |
| Runchang Lin,Xiu Ye,Shangyou Zhang,Peng Zhu |
| Keywords:Discontinuous Galerkin, finite element method, convection-diffusion-reaction problem, singular perturbation, polyhedral mesh |
| Abstract: |
| In this article, we studied a discontinuous Galerkin finite element method for convection-diffusion-reaction problems with singular perturbation. Our approach is highly flexible by allowing the use of discontinuous approximating function on polytopal mesh without imposing extra conditions on the convection coefficient. A priori error estimate is devised in a suitable energy norm on general polytopal mesh. Numerical examples are provided. |
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