Low‐frequency acoustic resonances from the axi‐symmetrical bubble plume

2007 ◽  
Vol 121 (5) ◽  
pp. 3032-3032
Author(s):  
Michael J. Buckingham ◽  
Thomas R. Hahn ◽  
Thomas K. Berger
Keyword(s):  
Low Frequency ◽  
Bubble Plume ◽  
Acoustic Resonances

Low‐frequency acoustic resonances in the bubble plume formed by a plunging water jet

1999 ◽  
Vol 106 (4) ◽  
pp. 2116-2116
Author(s):  
Thomas K. Berger ◽  
Thomas R. Hahn ◽  
Michael J. Buckingham
Keyword(s):  
Low Frequency ◽  
Water Jet ◽  
Bubble Plume ◽  
Plunging Water Jet ◽  
Acoustic Resonances

Acoustic Resonances of an Industrial Gas Turbine Combustion System

2000 ◽  
Vol 123 (4) ◽  
pp. 766-773 ◽  
Author(s):  
S. Hubbard ◽  
A. P. Dowling
Keyword(s):  
Gas Turbine ◽  
Acoustic Waves ◽  
Low Frequency ◽  
Helmholtz Resonator ◽  
Nonlinear Effects ◽  
Operating Conditions ◽  
Resonant Frequencies ◽  
Bulk Mode ◽  
Acoustic Resonances ◽  
Industrial Gas Turbine

A theory is developed to describe low-frequency acoustic waves in the complicated diffuser/combustor geometry of a typical industrial gas turbine. This is applied to the RB211-DLE geometry to give predictions for the frequencies of the acoustic resonances at a range of operating conditions. The main resonant frequencies are to be found around 605 Hz (associated with the plenum) and around 461 Hz and 823 Hz (associated with the combustion chamber), as well as one at around 22 Hz (a bulk mode associated with the system as a whole). The stabilizing effects of a Helmholtz resonator, which models damping through nonlinear effects, are included, together with effects of coupled pressure waves in the fuel supply system.

scholarly journals Suppression of low-frequency acoustic resonances in integrated optic lithium niobate modulators

2019 ◽  
Vol 1326 ◽  
pp. 012014
Author(s):  
A V Varlamov ◽  
M Yu Plotnikov ◽  
A S Aleinik ◽  
A A Vlasov ◽  
P M Agruzov ◽  
...  
Keyword(s):  
Lithium Niobate ◽  
Low Frequency ◽  
Acoustic Resonances

Acoustic resonances in the bubble plume formed by a plunging water jet

2003 ◽  
Vol 459 (2035) ◽  
pp. 1751-1782 ◽  
Author(s):  
Thomas R. Hahn ◽  
Thomas K. Berger ◽  
Michael J. Buckingham
Keyword(s):  
Water Jet ◽  
Bubble Plume ◽  
Plunging Water Jet ◽  
Acoustic Resonances

Acoustic Resonances of an Industrial Gas Turbine Combustion System

2000 ◽  
Author(s):  
S. Hubbard ◽  
A. P. Dowling
Keyword(s):  
Combustion Chamber ◽  
Gas Turbine ◽  
Acoustic Waves ◽  
Low Frequency ◽  
Operating Conditions ◽  
Combustion System ◽  
Resonant Frequencies ◽  
Bulk Mode ◽  
Acoustic Resonances ◽  
Industrial Gas Turbine

A theory is developed to describe low frequency acoustic waves in the complicated diffuser/combustor geometry of a typical industrial gas turbine. This is applied to the RB211-DLE geometry to give predictions for the frequencies of the acoustic resonances at a range of operating conditions. The main resonant frequencies are to be found around 605 Hz (associated with the plenum) and around 461 Hz and 823 Hz (associated with the combustion chamber), as well as one at around 22 Hz (a bulk mode associated with the system as a whole).

scholarly journals Low‐frequency noise and bubble plume oscillations

1987 ◽  
Vol 82 (S1) ◽  
pp. S62-S62 ◽  
Author(s):  
W. M. Carey ◽  
J. W. Fitzgerald
Keyword(s):  
Low Frequency ◽  
Frequency Noise ◽  
Low Frequency Noise ◽  
Bubble Plume
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