Abstract
This contribution is concerned with aposteriori error analysis of discontinuous Galerkin (dG) schemes approximating hyperbolic conservation laws. In the scalar case the aposteriori analysis is based on the \(L^1\) contraction property and the doubling of variables technique. In the system case the appropriate stability framework is in \(L^2,\) based on relative entropies. It is only applicable if one of the solutions, which are compared to each other, is Lipschitz. For dG schemes approximating hyperbolic conservation laws neither the entropy solution nor the numerical solution need to be Lipschitz. We explain how this obstacle can be overcome using a reconstruction approach which leads to an aposteriori error estimate.
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Giesselmann, J., Pryer, T. (2014). On Aposteriori Error Analysis of DG Schemes Approximating Hyperbolic Conservation Laws. In: Fuhrmann, J., Ohlberger, M., Rohde, C. (eds) Finite Volumes for Complex Applications VII-Methods and Theoretical Aspects. Springer Proceedings in Mathematics & Statistics, vol 77. Springer, Cham. https://doi.org/10.1007/978-3-319-05684-5_30
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DOI: https://doi.org/10.1007/978-3-319-05684-5_30
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