Oscillations in the parallel discharge of two supersonic nonisobaric jets

Abstract

Oscillating flows in systems of parallel supersonic nonisobaric jets discharged into a submerged space [1-12] are of considerable interest from the viewpoint of practical applications of this phenomenon and the development of models of transients in supersonic jets. Worth noting among the different studies in this area is [2], where for a system of parallel jets and jets parallel to a shield the author obtained the first data on the possible modes of vibration, their relative intensities, and the region of Mach numbers in which they exist. The authors of [4-12] presented the most complete empirical results on the modal composition of acoustic vibrations, their intensities, and the types of oscillations of the wave structure of the jets in relation to the discharge parameters and the interlaminar distance in two-jet systems. This information was compared with the analogous characteristics of single jets. However, no physical model has yet been presented to describe these characteristics in systems of jets.