The interaction between acoustics and aerodynamics of a supersonic jet is an actual fundamental topic which has been a matter of discussion in the last decades. The present paper is devoted to the experimental analysis of free and impinging jets with particular attention on the effect of an impinging surface on screech tones. The acoustics is studied using free-field microphones, while Particle Image Velocimetry is used to investigate the velocity field. The analysis of acquired data allowed to verify and explain the coupling between acoustic discrete tones and mean and fluctuating flow velocities. (C) 2013 AIP Publishing LLC.
Aeroacoustics and aerodynamics of impinging supersonic jets: Analysis of the screech tones / Sinibaldi, Giorgia; Lacagnina, Giovanni; Marino, Luca; Romano, Giovanni Paolo. - In: PHYSICS OF FLUIDS. - ISSN 1070-6631. - STAMPA. - 25:8(2013), p. 086104. [10.1063/1.4819333]
Aeroacoustics and aerodynamics of impinging supersonic jets: Analysis of the screech tones
SINIBALDI, GIORGIA;LACAGNINA, GIOVANNI;MARINO, Luca;ROMANO, Giovanni Paolo
2013
Abstract
The interaction between acoustics and aerodynamics of a supersonic jet is an actual fundamental topic which has been a matter of discussion in the last decades. The present paper is devoted to the experimental analysis of free and impinging jets with particular attention on the effect of an impinging surface on screech tones. The acoustics is studied using free-field microphones, while Particle Image Velocimetry is used to investigate the velocity field. The analysis of acquired data allowed to verify and explain the coupling between acoustic discrete tones and mean and fluctuating flow velocities. (C) 2013 AIP Publishing LLC.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
