FESTUNG: A MATLAB / GNU Octave toolbox for the discontinuous Galerkin method. Part III: Hybridized discontinuous Galerkin (HDG) formulation

The third paper in our series on open source MATLAB / GNU Octave implementation of the discontinuous Galerkin (DG) method(s) focuses on a hybridized formulation. The main aim of this ongoing work is to develop rapid prototyping techniques covering a range of standard DG methodologies and suitable fo...

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Bibliographic Details
Published in:arXiv.org 2018-06
Main Authors: Jaust, Alexander, Reuter, Balthasar, Aizinger, Vadym, Schütz, Jochen, Knabner, Peter
Format: Article
Language:English
Subjects:
Discretization
Galerkin method
Mapping
Mathematical analysis
Matlab
Matrix algebra
Matrix methods
Polynomials
Rapid prototyping
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Summary:The third paper in our series on open source MATLAB / GNU Octave implementation of the discontinuous Galerkin (DG) method(s) focuses on a hybridized formulation. The main aim of this ongoing work is to develop rapid prototyping techniques covering a range of standard DG methodologies and suitable for small to medium sized applications. Our FESTUNG package relies on fully vectorized matrix / vector operations throughout, and all details of the implementation are fully documented. Once again, great care was taken to maintain a direct mapping between discretization terms and code routines as well as to ensure full compatibility to GNU Octave. The current work formulates a hybridized DG scheme for linear advection problem, describes hybrid approximation spaces on the mesh skeleton, and compares the performance of this discretization to the standard (element-based) DG method for different polynomial orders.
ISSN:2331-8422
DOI:10.48550/arxiv.1709.04390