Volume 6, Issue 4
Discontinuous Galerkin Methods for Convection-diffusion Equations for Varying and Vanishing Diffusivity

J. Proft & B. Riviere

DOI:

Int. J. Numer. Anal. Mod., 6 (2009), pp. 533-561

Published online: 2009-06

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  • Abstract

This work formulates and analyzes a new family of discontinuous Galerkin methods for the time-dependent convection-diffusion equation with highly varying diffusion coefficients, that do not require the use of slope limiting techniques. The proposed methods are based on the standard NIPG/SIPG techniques, but use special diffusive numerical fluxes at some important interfaces. The resulting numerical solutions have an L^2 error that is significantly smaller than the error obtained with standard discontinuous Galerkin methods. Theoretical convergence results are also obtained.

  • Keywords

Numerical fluxes discontinuous Galerkin methods high and low diffusivity L^2 error

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COPYRIGHT: © Global Science Press

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@Article{IJNAM-6-533, author = {}, title = {Discontinuous Galerkin Methods for Convection-diffusion Equations for Varying and Vanishing Diffusivity}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2009}, volume = {6}, number = {4}, pages = {533--561}, abstract = {This work formulates and analyzes a new family of discontinuous Galerkin methods for the time-dependent convection-diffusion equation with highly varying diffusion coefficients, that do not require the use of slope limiting techniques. The proposed methods are based on the standard NIPG/SIPG techniques, but use special diffusive numerical fluxes at some important interfaces. The resulting numerical solutions have an L^2 error that is significantly smaller than the error obtained with standard discontinuous Galerkin methods. Theoretical convergence results are also obtained. }, issn = {2617-8710}, doi = {https://doi.org/}, url = {http://global-sci.org/intro/article_detail/ijnam/783.html} }
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