TY - JOUR T1 - FESTUNG: A MATLAB / GNU Octave Toolbox for the Discontinuous Galerkin Method. Part IV: Generic Problem Framework and Model-Coupling Interface AU - Reuter , Balthasar AU - Rupp , Andreas AU - Aizinger , Vadym AU - Frank , Florian AU - Knabner , Peter JO - Communications in Computational Physics VL - 2 SP - 827 EP - 876 PY - 2020 DA - 2020/06 SN - 28 DO - http://doi.org/10.4208/cicp.OA-2019-0132 UR - https://global-sci.org/intro/article_detail/cicp/16955.html KW - Open source MATLAB / GNU Octave, local discontinuous Galerkin method, 2Dv shallow water equations with free surface, primitive hydrostatic equations, Darcy's law, coupled model. AB -

This is the fourth installment in our series on implementing the discontinuous Galerkin (DG) method as an open source MATLAB / GNU Octave toolbox. Similarly to its predecessors, this part presents new features for application developers employing DG methods and follows our strategy of relying on fully vectorized constructs and supplying a comprehensive documentation. The specific focus of the current work is the newly added generic problem implementation framework and the highly customizable model-coupling interface for multi-domain and multi-physics simulation tools based on this framework. The functionality of the coupling interface in the FESTUNG toolbox is illustrated using a two-way coupled free-surface / groundwater flow system as an example application.