Experimental analysis of the near field pressure of a single stream subsonic jet

2013 ◽  
Author(s):  
Mathieu Lorteau ◽  
Franck Cléro ◽  
Francois Vuillot
Keyword(s):  
Experimental Analysis ◽  
Near Field ◽  
Single Stream ◽  
Subsonic Jet

Dynamics of an impinging jet. Part 2. The noise generation

1982 ◽  
Vol 116 ◽  
pp. 379-391 ◽  
Author(s):  
Nagy S. Nosseir ◽  
Chih-Ming Ho
Keyword(s):  
Coherent Structures ◽  
Near Field ◽  
Pressure Fluctuations ◽  
Aerodynamic Noise ◽  
Far Field ◽  
Noise Generation ◽  
Physical Mechanisms ◽  
Field Noise ◽  
Subsonic Jet ◽  
Jet Axis

The aerodynamic noise generated by a subsonic jet impinging on a flat plate is studied from measurements of near-field and surface-pressure fluctuations. The far-field noise measured at 90° to the jet axis is found to be generated by two different physical mechanisms. One mechanism is the impinging of the large coherent structures on the plate, and the other is associated with the initial instability of the shear layer. These two sources of noise radiate to the far field via different acoustical paths.

scholarly journals Near-field Wavepackets and the Far-field Sound of a Subsonic Jet

2013 ◽  
Author(s):  
David E. Breakey ◽  
Peter Jordan ◽  
Andre Cavalieri ◽  
Olivier Léon
Keyword(s):  
Near Field ◽  
Far Field ◽  
Field Sound ◽  
Subsonic Jet

Wavelength dispersion of the local field intensity in silver–gold nanocages

2015 ◽  
Vol 17 (11) ◽  
pp. 7355-7365 ◽  
Author(s):  
R. Pilot ◽  
A. Zoppi ◽  
S. Trigari ◽  
F. L. Deepak ◽  
E. Giorgetti ◽  
...  
Keyword(s):  
Field Intensity ◽  
Local Field ◽  
Experimental Analysis ◽  
Spectral Distribution ◽  
Near Field ◽  
Far Field ◽  
Hollow Nanoparticles ◽  
Sers Enhancement ◽  
Gold Nanocages

Combined theoretical and experimental analysis of the far-field (extinction) and of the near-field (SERS enhancement) spectral distribution in hollow nanoparticles, that is, silver–gold nanocages (NCs).

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