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Wavelets and adaptive grids for the discontinuous Galerkin method

In this paper, space adaptivity is introduced to control the error in the numerical solution of hyperbolic systems of conservation laws. The reference numerical scheme is a new version of the discontinuous Galerkin method, which uses an implicit diffusive term in the direction of the streamlines, fo...

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Bibliographic Details
Published in:Numerical algorithms 2005-07, Vol.39 (1-3), p.143-154
Main Authors: D az Calle, Jorge L., Devloo, Philippe R. B., Gomes, S nia M.
Format: Article
Language:English
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Summary:In this paper, space adaptivity is introduced to control the error in the numerical solution of hyperbolic systems of conservation laws. The reference numerical scheme is a new version of the discontinuous Galerkin method, which uses an implicit diffusive term in the direction of the streamlines, for stability purposes. The decision whether to refine or to unrefine the grid in a certain location is taken according to the magnitude of wavelet coefficients, which are indicators of local smoothness of the numerical solution. Numerical solutions of the nonlinear Euler equations illustrate the efficiency of the method.
ISSN:1017-1398
1572-9265
DOI:10.1007/s11075-004-3626-9