抄録
In this study, flow and acoustic fields of a transitional supersonic free jet are investigated. Compressible Navier-Stokes equations are solved by a high-order compact scheme for investigating the effects of inflow shear layer characteristics. The Mach and Reynolds numbers are set to 2.1 and 70,000, respectively. Three different jets with different shear layer thickness are analysed, and the shear layer thickness effects are discussed. With increasing the shear layer, the turbulent fluctuation along the shear layer becomes larger and resulting Mach wave radiation becomes stronger.
