Book Description
Noise radiated from a supersonic jet is computed using the Parabolized Stability Equations (PSE) method. The evolution of the instability waves inside the jet is computed using the PSE method and the noise radiated to the far field from these waves is calculated by solving the wave equation using the Fourier transform method. We performed the computations for a cold supersonic jet of Mach number 2.1 which is excited by disturbances with Strouhal numbers St=.2 and .4 and the azimuthal wavenumber m=l. Good agreement in the sound pressure level are observed between the computed and the measured (Troutt and McLaughlin 1980) results.Balakumar, P. and Owis, FaroukLangley Research CenterJET AIRCRAFT NOISE; SUPERSONIC JET FLOW; SUBSONIC FLOW; STABILITY; FAR FIELDS; WAVE EQUATIONS; FOURIER TRANSFORMATION; SOUND PRESSURE; COLD GAS; STROUHAL NUMBER; AZIMUTH