GPU CABARET Solutions for the SILOET Jet Noise Experiment: Flow and Noise Modelling

2016 ◽  
Author(s):  
Anton P. Markesteijn ◽  
Vasily Semiletov ◽  
Sergey A. Karabasov
Keyword(s):  
Jet Noise ◽  
Noise Experiment

Comparison of GPU CABARET, RANS and RANS/ILES High Resolution Method Solutions for the CoJen Jet Noise Experiment

2019 ◽  
Author(s):  
Anton P. Markesteijn ◽  
Sergey A. Karabasov ◽  
Vasily Gryazev ◽  
Ruslan S. Ayupov ◽  
Leonid Benderskiy ◽  
...  
Keyword(s):  
High Resolution ◽  
Jet Noise ◽  
Resolution Method ◽  
Noise Experiment ◽  
High Resolution Method

Energy transfer mechanism of supersonic jet noise through rectangular nozzles

2017 ◽  
Vol 65 (2) ◽  
pp. 110-120 ◽  
Author(s):  
Zhe Chen ◽  
Jiu-Hui Wu ◽  
A-Dan Ren ◽  
Xin Chen ◽  
Zhen Huang
Keyword(s):  
Energy Transfer ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Transfer Mechanism ◽  
Energy Transfer Mechanism ◽  
Supersonic Jet Noise

A proposed wavy shield for suppression of supersonic jet noise utilizing reflections

2021 ◽  
Vol 20 (1-2) ◽  
pp. 4-34
Author(s):  
Reda R Mankbadi ◽  
Saman Salehian
Keyword(s):  
Large Scale ◽  
Flat Surface ◽  
Near Field ◽  
Supersonic Jet ◽  
Jet Noise ◽  
Dominant Frequency ◽  
Wavy Surface ◽  
Initial Region ◽  
Reflected Waves ◽  
Free Jet

In this work we propose replacing the conventional flat-surface airframe that shields the engine by a wavy surface. The basic principle is to design a wavy pattern to reflect the incoming near-field flow and acoustic perturbations into waves of a particular dominant frequency. The reflected waves will then excite the corresponding frequency of the large-scale structure in the initial region of the jet’s shear layer. By designing the frequency of the reflected waves to be the harmonic of the fundamental frequency that corresponds to the radiated peak noise, the two frequency-modes interact nonlinearly. With the appropriate phase difference, the harmonic dampens the fundamental as it extracts energy from it to amplify. The outcome is a reduction in the peak noise. To evaluate this concept, we conducted Detached Eddy Simulations for a rectangular supersonic jet with and without the wavy shield and verified our numerical results with experimental data for a free jet, as well as, for a jet with an adjacent flat surface. Results show that the proposed wavy surface reduces the jet noise as compared to that of the corresponding flat surface by as much as 4 dB.

Erratum on Role of Jet Temperature in Correlating Jet Noise

AIAA Journal ◽  
2010 ◽  
Vol 48 (2) ◽  
pp. 510-511
Author(s):  
K. Viswanathan ◽  
M. J. Czech
Keyword(s):  
Jet Noise
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