TY - JOUR T1 - Convergence of a Relaxation Scheme for a 2×2 Triangular System of Conservation Laws AU - Agrell , C. AU - Risebro , N. H. JO - International Journal of Numerical Analysis and Modeling VL - 1 SP - 148 EP - 171 PY - 2014 DA - 2014/11 SN - 11 DO - http://doi.org/ UR - https://global-sci.org/intro/article_detail/ijnam/519.html KW - triangular systems of conservation laws, relaxation, compensated compactness. AB -

We study relaxation approximations to solutions of a 2 × 2 triangular system of conservation laws. We show that smooth relaxation approximations exist for all time. A finite difference approximation of the relaxation system gives rise to a relaxation scheme of the Jin and Xin type. In both cases we show that a sequence of approximate solutions is produced where the limit is a weak solution of the triangular system. Compensated compactness is used to establish convergence.