Shock-associated noise in supersonic jets

Autor:	S. P. Pao, John M. Seiner
Rok vydání:	1983
Předmět:	Physics Jet (fluid) Astrophysics::High Energy Astrophysical Phenomena Acoustics Aerospace Engineering Mechanics Vorticity Shock (mechanics) Physics::Fluid Dynamics Shock diamond Aeroacoustics Oblique shock Supersonic speed Noise (radio)
Zdroj:	AIAA Journal. 21:687-693
ISSN:	1533-385X 0001-1452
Popis:	This paper examines the fundamental mechanism of broadband shock noise in an improperly expanded supersonic jet. The study includes circular convergent and convergent-divergent nozzles. The main source of shock noise is determined to be the transient interaction between the shock front and the convected vorticity within the jet plume. The discussion of the noise generation mechanism is based on detailed numerical analysis, theoretical modeling, refined measurements of the jet mean flow, shock-cell structure, turbulence, and noise. Results in this study provide a broad-based generalization for the Harper-Bourne and Fisher analysis and prediction method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::76ad312fa82d87ce3bef424a92f93e1f https://doi.org/10.2514/3.8134 Zobrazit plný text záznamu