Nozzle pressure ratio Acoustic fluctuations 1 Acoustic noise 1 Adverse pressure gradient 1 Aerodynamics 1 Aspect ratio 1 Aspect-ratio 1 Closed form modeling 1 Divergents 1 Experimental investigations 1 Flow visualisation 1 Forecasting 1 Geometry effects 1 Jet mixing 1 Length reduction 1 Mixing 1 Navier Stokes equations 1 Nozzle exits 1 Nozzles 1 Pressure gradient 1 Reynolds - Averaged Navier-Stokes 1 Shock associated noise 1 Spectral density 1 Statistical quantity 1 Statistical sources 1 Vector Green's function 1 Viscous flow 1 article 1 baseflow (hydrology) 1 cross correlation 1