563 RWTH Publication No: 819796        2021       
TITLE Model-Order Reduction For Hyperbolic Relaxation Systems
AUTHORS Sara Grundel, Michael Herty
ABSTRACT We propose a novel framework for model-order reduction of hyperbolic differential equations. The approach combines a relaxation formulation of the hyperbolic equations with a discretization using shifted base functions. Model-order reduction techniques are then applied to the resulting system of coupled ordinary differential equations. On computational examples including in particular the case of shock waves we show the validity of the approach and the performance of the reduced system.
KEYWORDS hyperbolic relaxation systems; model order reduction; numerical methods
DOI 10.1515/ijnsns-2021-0192
PUBLICATION International Journal of Nonlinear Sciences and Numerical Simulation, 2022