Analysis of Aeroacoustic Characteristics of a Supersonic Jet at Designed Conditions Based on Numerical Simulation Data
摘要
Numerical simulation of the aeroacoustic characteristics of a supersonic jet issuing from a Laval nozzle into space at rest at the design condition (Mach number M = 2) was carried out. The results of calculations using the large eddy simulation (LES) method are presented. The mean and fluctuation characteristics of the flow in the jet, as well as the characteristics of the jet noise in the far field, including its azimuthal composition, were obtained. The calculation results are compared with experimental data, and their satisfactory agreement is shown. It is concluded that there are various mechanisms of noise generation in the considered jet.