Theoretical and Numerical Modeling of Multicomponent Transcritical Diffuse Interfaces Under LRE Conditions

Abstract In this study, a theoretical and numerical framework for simulating transcritical flows under variety of conditions interest aerospace propulsion applications is presented. A real-fluid multicomponent multiphase thermodynamic model, based on cubic equation state (EoS) vapor–liquid equilibrium (VLE) assumptions, presented to describe mixtures properties. The versatility model reported since it can represent at the same time supercritical states as well subcritical stable two-phase equilibrium, via homogeneous mixture approach. effect has evaluation thermophysical variables will be emphasized. From Computational Fluid Dynamics (CFD) point view, well-known challenges that arise with coupling between thermodynamics governing equations conditions, are addressed by comparing fully conservative (FC) quasi-conservative (QC) schemes, in context advection problem contact discontinuity.