Numerical Prediction of Mean Flow and Acoustic Field of a Supersonic Impinging Jet

2014 ◽  
Author(s):  
Konstantin A. Kurbatskii ◽  
Saravana Kumar ◽  
Hossam A. El-Asrag
Keyword(s):  
Acoustic Field ◽  
Impinging Jet ◽  
Numerical Prediction ◽  
Mean Flow ◽  
Supersonic Impinging Jet

Numerical Prediction of an Acoustic Field of a Supersonic Jet Impinging on a Plate at Different Inclination Angles

2014 ◽  
Author(s):  
Vladimir Golubev ◽  
Anstasios Lyrintzis ◽  
Reda R. Mankbadi ◽  
Konstantin A. Kurbatskii ◽  
Barrett Guenthoer
Keyword(s):  
Acoustic Field ◽  
Supersonic Jet ◽  
Numerical Prediction ◽  
Inclination Angles

The acoustic field of sources in shear flow with application to jet noise: convective amplification

1977 ◽  
Vol 79 (1) ◽  
pp. 33-47 ◽  
Author(s):  
T. F. Balsa
Keyword(s):  
Stress Tensor ◽  
Acoustic Field ◽  
Acoustic Pressure ◽  
Time Derivative ◽  
Jet Noise ◽  
Mean Flow ◽  
Retarded Time ◽  
High Frequencies ◽  
Classic Theory ◽  
Derivatives Of

Lighthill, in his elegant and classic theory of jet noise, showed that the far-field acoustic pressure of noise generated by turbulence is proportional to the integral over the jet volume of the second time derivative of the Lighthill stress tensor, the integrand being evaluated at a retarded time. The purpose of this paper is to generalize the above results to include the effects of mean flow (velocity and temperature) surrounding the source of sound. It is shown quite generally that the integrand is now a certain functional of the Lighthill stress tensor evaluated at a retarded time. More important, however, at low and high frequencies this functional assumes an extremely simple form, so that the acoustic field can once more be given by integrals of the time derivatives of the Lighthill tensor. Both the self- and the shear-noise contributions to the pressure are evaluated.

1110 Suppression of Self-Induced Flow Oscillation in Supersonic Impinging Jet using Wire

2015 ◽  
Vol 2015.53 (0) ◽  
pp. _1110-1_-_1110-2_
Author(s):  
Katsuki NAKAO ◽  
Tsuyoshi YASUNOBU ◽  
Yumiko OTOBE ◽  
Masaki SHIMADU
Keyword(s):  
Impinging Jet ◽  
Flow Oscillation ◽  
Induced Flow ◽  
Supersonic Impinging Jet
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