Exploring the interaction between phase separation and turbulent fluid dynamics in multi-species supercritical jets using a tabulated real-fluid model

Today, injection of liquid fuels at supercritical pressures is a frequently used technique to improve the efficiency energy systems and address environmental constraints. This paper focuses on analysis coupling between hydrodynamics thermodynamics multi-species jets. Various phase transition phenomena, such as droplet formation process by condensation, which have been shown experimentally significantly affect flow mixing dynamics jet, are studied. For this purpose, tabulated multicomponent real fluid model assuming vapor-liquid equilibrium proposed for simulation turbulent n-hexane jets injected with different inflow temperatures (480 K, 560 600 K) into nitrogen 5 MPa 293 K. Numerical results compared available experimental data but also published numerical studies, showing good agreement. In addition, comparisons turbulence models, including LES Sigma, Smagorinsky RANS K − ϵ models performed, relevance Sigma these very complex two-phase flows.