499 IGPM499.pdf        December 2019
TITLE Coupling of Linear Elastic Equations and Compressible Euler Equations and Stiffened Gas
AUTHORS Michael Herty, Siegfried Müller, Aleksey Sikstel
ABSTRACT Modelling of cavitation phenomena requires coupling of models for fluid and solid materials. For this purpose we extend a strategy based on the solution of coupled Riemann problems, proposed in [9]. The coupling strategy for the case of perfect gas equation of state has been established and validated in [8]. In this work we include the case of a stiffened gas and derive conditions under which there exists a unique solution to coupled Riemann problems.
KEYWORDS Linear elastic equations, compressible Euler equations, coupling conditions, coupled Riemann problem, Lax curves