Path-conservative in-cell discontinuous reconstruction schemes for non conservative hyperbolic systems

We are interested in the numerical approximation of discontinuous solutions in nonconservative hyperbolic systems. We introduce the basics of a new strategy based on in-cell discontinuous reconstructions to deal with this challenging topic, and apply it to a 2x2 non-conservative toy model, and a 3x3 gas dynamics system in Lagrangian coordinates. The strategy allows in particular to compute exactly isolated shocks. Numerical evidences are proposed.

Keywords

non-conservative hyperbolic systems, path conservative schemes, in-cell discontinuous reconstructions, discontinuous solutions, shock waves.

2010 Mathematics Subject Classification

35L40, 65M99, 76M12, 76N15

Full Text (PDF format)

Received 24 November 2018

Accepted 2 August 2019

Published 1 April 2020