Abstract
We consider a finite element method which couples the continuous Galerkin method away from internal and boundary layers with a discontinuous Galerkin method in the vicinity of layers. We prove that this consistent method is stable in the streamline diffusion norm if the convection field flows non-characteristically from the region of the continuous Galerkin to the region of the discontinuous Galerkin method. The stability properties of the coupled method are illustrated with a numerical experiment.
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We gratefully thank the Archimedes Center for Modeling, Analysis and Computation in Crete for hosting the authors during the preparation of this manuscript.
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Cangiani, A., Chapman, J., Georgoulis, E. et al. On the Stability of Continuous–Discontinuous Galerkin Methods for Advection–Diffusion–Reaction Problems. J Sci Comput 57, 313–330 (2013). https://doi.org/10.1007/s10915-013-9707-y
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DOI: https://doi.org/10.1007/s10915-013-9707-y