Invariant Domain-Preserving Approximations for the Euler Equations with Tabulated Equation of State

This paper is concerned with the approximation of compressible Euler equations supplemented an equation state that either tabulated or given by expression so involved solving elementary Riemann problems hopeless. A robust first-order technique guarantees density and internal energy are positive proposed. key ingredient method a local using covolume ansatz from which upper bounds on maximum wave speed derived for every problem.