LARGE-EDDY SIMULATION AND DIRECT NOISE PREDICTION

A high supersonic, shocked and heated jet at a Reynolds number of 105 is computed by large-eddy simulations (LES) to directly determine its radiated sound field, using low-dissipation schemes in combi-nation with an adaptative shock-capturing method. The jet exit parameters are a Mach number ofMe = ue/ce = 3.30, a static pressure of Pe = 0.5 × 10 5 Pa and a static temperature of Te = 360 K, where ue and ce are the exit velocity and sound speed. The aerodynamic and the near acoustic fields are com-pared with to theoretical results [1] and experimen-tal data [2, 3, 4]. Shear layer velocity fluctutions are analyzed and some insights into the acoustic field are finally shown. 1