Assessment of phase-separation phenomena in LREs cryogenic flows

In this contribution, a tabulated vapor-liquid-equilibrium thermodynamic framework is proposed to assess phase separation phenomena for liquid-oxygen gaseous-hydrogen propellant combination under condi- tions relevant for rockets. The model is validated and integrated into a computational fluid dynamics solver capable of handling large density gradients. Employing a zero-dimensional thermodynamic analy- sis, the encountered peculiar vapor-liquid-equilibrium conditions and their impact on the fluid properties are quantified. Finally, the framework is employed to investigate a reference two-dimensional supercritical mixing layer and the main differences induced by the two-phase flow effect are discussed.