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Analysis of Steady-State and Time Dependent Phenomena in a Supersonic Air Ejector Using Wall-Modeled Large-Eddy Simulation
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This work presents the results of a wall-modeled Large-Eddy Simulation of a supersonic air ejector in on-design operation. Using post-processing tools based on exergy tubes, the transfers between the primary and secondary streams are studied, as well as the choking of the secondary stream. The results are compared to existing RANS simulations of the same case. Finally, the motion of the secondary shock, located in the diffuser, is studied and compared to similar oscillatory motion, observed experimentally in converging-diverging over-expanded nozzles.
