This article is cited in 1 paper

Model for the formation of acoustic self-oscillations in a chamber with a jet flowing through its nozzle

V. B. Kurzin

Lavrentyev Institute of Hydrodynamics of Siberian Branch of the Russian Academy of Sciences, Novosibirsk, 630090, Russia

Abstract: This paper describes free acoustic oscillations of gas in a chamber with a jet flowing through its nozzle in the case of nonstationary intensity component of vortex sheet flowing down from the edge of the nozzle. There is established feedback between acoustic oscillations and oscillations induced by a corresponding vortex sheet component. It is shown that, in the presence of given feedback, there could be instability of acoustic oscillations, which would result in acoustic self-vibrations in the chamber. The boundaries of the domain in which instability is formed are determined by developing a mathematical model of stable acoustic oscillations in the chamber with account for the influence of the vortex sheet.

Keywords: chamber, jet, vortex sheet, acoustic vibrations, feedback, instability, self-oscillation.

UDC: 532.5+534

Received: 28.10.2014
Revised: 14.09.2016

DOI: 10.15372/PMTF20170610

 English version: Journal of Applied Mechanics and Technical Physics, 2017, 58:6, 1040–1052

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