Application of Moment Realizability Criteria for the Coupling of the Boltzmann and Euler Equations

We perform the coupling of the Boltzmann and Euler equations in two dimensional spatial space. The moment realizability criteria have been used for the domains of validity of the Boltzmann and Euler equations. The domain decompositions for such equations have been presented in different time steps. The numerical results obtained from the coupling code have been compared with those from the pure Boltzmann one.