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Article

Kučera, Václav
A new reconstruction-enhanced discontinuous Galerkin method for time-dependent problems. (English). In: Chleboun, J., Přikryl, P., Segeth, K. and Šístek, J. (eds.): Programs and Algorithms of Numerical Mathematics. Proceedings of Seminar. Dolní Maxov, June 6-11, 2010. Institute of Mathematics AS CR, Prague, 2010. pp. 125-130
MSC: 65M08, 65M60, 65N30
Keywords:
discontinuous Galerkin method; reconstruction operator; nonlinear nonstationary scalar hyperbolic equation; Lipschitz-continuous boundary
Summary:
This work is concerned with the introduction of a new numerical scheme based on the discontinuous Galerkin (DG) method. We propose to follow the methodology of higher order finite volume schemes and introduce a reconstruction operator into the DG scheme. This operator constructs higher order piecewise polynomial reconstructions from the lower order DG scheme. Such a procedure was proposed already in [2] based on heuristic arguments, however we provide a rigorous derivation, which justifies the increased order of accuracy. Numerical experiments are carried out.
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