Second-order invariant domain preserving approximation of the compressible Navier–Stokes equations

We present a fully discrete approximation technique for the compressible Navier–Stokes equations that is second-order accurate in time and space, semi-implicit, guaranteed to be invariant domain preserving. The restriction on step standard hyperbolic CFL condition, i.e. ? ? O ( h ) ? V where some reference velocity scale typical meshsize. • equations. method