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Supersonic kerosene jet was computationally investigated by Large Eddy Simulation (LES) combined with the principle of Extended Corresponding States (ECS) applied to model real-gas effect by characterizing the pressure-temperature-density behavior of real kerosene. Two cases including real-gas effect considered jet using the ECS principle and real-gas effect neglected jet using ideal gas law were both set to comparatively reveal the flow evolution and development. The modeling results achieved good agreements with the measured near nozzle shock structures in experiments. Furthermore, qualitative and quantitative analyses of flow properties like shock structures, aerodynamic fields, and mixing characteristics were conducted to display the influence of real-gas effect on the kerosene jet properties. The results show that the Mach disk is smaller and closer to nozzle exit in real-gas effect considered jet. And its temperature, pressure and density are higher, but the Mach number is lower at the nozzle exit and upstream of the normal shock. In addition, the diffusion physics is very similar in the two jets, but a little bit shorter potential core and larger diffusion area appear in real-gas effect considered jet.

Real-gas Effect Accounted for by the Principle of Extended Corresponding States in Modeling Supersonic Kerosene Jet