In-cell Discontinuous Reconstruction path-conservative methods for non conservative hyperbolic systems -- Second-order extension
Abstract
We are interested in the numerical approximation of discontinuous solutions in non conservative hyperbolic systems. An extension to second-order of a new strategy based on in-cell discontinuous reconstructions to deal with this challenging topic is presented. This extension is based on the combination of the first-order in-cell reconstruction and the MUSCL-Hancock reconstruction. The first-order strategy allowed in particular to capture exactly the isolated shocks and this new second-order extension keep this property. We also set the basis of an extension to high-order methods following this in-cell methodology and a way for capturing exactly more than one shock. Several numerical tests are proposed to validate the methods for the Coupled-Burgers system, Gas dynamics equations in Lagrangian coordinates and the modified shallow water system.
Cite
@article{arxiv.2105.00424,
title = {In-cell Discontinuous Reconstruction path-conservative methods for non conservative hyperbolic systems -- Second-order extension},
author = {Ernesto Pimentel-García and Manuel J. Castro and Christophe Chalons and Tomás Morales de Luna and Carlos Parés},
journal= {arXiv preprint arXiv:2105.00424},
year = {2022}
}