Effect of Nozzle Exit Shape on Aerodynamic Characteristic of Free Jet
Results of a numerical study of the effect of nozzle exit shape on round turbulent free jet are presented Three nozzle types with the same exit area were used:two sharp_edged nozzles and a smoothly contoured nozzle Two flow configurations:a subsonic jet case and a supersonic jet case are computed using different turbulent model (RNG k_e model and S_A model) The result indicates that the nozzle interior shape has important effect on aerodynamic characteristic of free jet Using second_order_accurate finite_volume schemes,sufficiently fine unstructured grid and non_reflecting boundary condition ensures numerical credibility of the solutions The results demonstrate favorable agreement with experimental data