Two-Dimensional Linear Implicit Relaxed Scheme for Hyperbolic Conservation Laws

WeIollo, Angelo presentPuppo, Gabriella aThomann, Andrea two-dimensional extension to the linear implicit all-speed finite volume scheme for hyperbolic conservation laws based on Jin-Xin relaxation recently forwarded in [6]. It is based on stiffly accurate SDIRK methods in time and a convex combination of Rusanov and centered fluxes in space making it asymptotically consistent in the low Mach number regime and allows an accurate capturing of material waves under large time steps. The scheme is numerically tested on the Euler equations and a non-linear model for elasticity in the compressible and low Mach number regime.