Abstract
A model of sound generated in a high subsonic (Mach 0.9) circular jet is solved numerically in cylindrical coordinates for nonaxisymmetric disturbances. The jet is excited by transient mass injection by a finite duration pulse via a rotating ring source. The flow field near-field and far-field pressure disturbances corresponding to these sources are described. In particular, the resulting pressure field which would serve to excite nearby panels is illustrated together with results on the excitation of thin slices of nearby panels. Considered are both the short-time behavior of the jet and the long-time behavior, after the initial excitation pulse has exited the computational domain.
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