Abstract

The non-equilibrium flow and frozen flow of hydrocarbon scramjet nozzle were numerically simulated to research the non-equilibrium effects on the nozzle performance. The numerical results show the recombination occurs during the expansion in the scramjet nozzle, which is helpful to the nozzle performance. The calculation results suggest the influence of the inlet mach and the fuel equivalence ratio to the non-equilibrium effects on nozzle performance is visible. Keywords-scramjet nozzle; chemical non-equilibrium effects; nozzle performance

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