Acoustic Analogy
The paper discusses the following: One-third octave jet noise spectra for a convergent nozzle at subsonic and supersonic velocities. Angle from downstream jet axis, 80 deg. Based data from Olsen. Narrow band jet noise spectra at 90 deg. and small angles to jet axis from Tam, Golobiowski and Seiner. V-large eddy simulation. Equation for small scale (unresolved) components. Formal solution for pressure.
Goldstein, Marvin↗