Cloud and precipitation interference by strong low-frequency sound wave

2020 ◽  
Author(s):  
JiaHua Wei ◽  
Jun Qiu ◽  
TieJian Li ◽  
YueFei Huang ◽  
Zhen Qiao ◽  
...  
Keyword(s):  
Sound Wave ◽  
Low Frequency ◽  
Frequency Sound ◽  
Frequency Sound Wave

Low-frequency sound wave parameter measurement in gravels

2010 ◽  
Vol 71 (1) ◽  
pp. 45-51 ◽  
Author(s):  
George W. Swenson ◽  
Michael J. White ◽  
Michael L. Oelze
Keyword(s):  
Sound Wave ◽  
Low Frequency ◽  
Parameter Measurement ◽  
Wave Parameter ◽  
Frequency Sound ◽  
Frequency Sound Wave

Mean field of a low-frequency sound wave propagating in a fluctuating ocean

2006 ◽  
Vol 119 (4) ◽  
pp. 2101-2105 ◽  
Author(s):  
Alexander G. Voronovich ◽  
Vladimir E. Ostashev
Keyword(s):  
Sound Wave ◽  
Mean Field ◽  
Low Frequency ◽  
Frequency Sound ◽  
Frequency Sound Wave

scholarly journals Planar acoustic notch filter for low frequency sound wave suppression

2018 ◽  
Vol 11 ◽  
pp. 259-266 ◽  
Author(s):  
Ming Yuan ◽  
Fan Yang ◽  
Jun Luo ◽  
Ziping Cao
Keyword(s):  
Sound Wave ◽  
Low Frequency ◽  
Notch Filter ◽  
Frequency Sound ◽  
Frequency Sound Wave

Modeling and linear analysis of sound generation mechanism in sonic soot blowers

2019 ◽  
Vol 25 (17) ◽  
pp. 2305-2315
Author(s):  
A. Najafi ◽  
M. Asayesh ◽  
A. Siami
Keyword(s):  
Sound Wave ◽  
Parametric Study ◽  
Low Frequency ◽  
Linear Analysis ◽  
Generation Mechanism ◽  
Frequency Content ◽  
Sound Generation ◽  
Governing Equations ◽  
High Level ◽  
Frequency Sound Wave

Sonic soot blowers (SSBs) are nondestructive tools to prevent ashes and particle build-up on the surfaces of boilers or other similar instruments. For higher performance, sonic soot cleaners should generate a high level-low frequency sound wave. In this article, the sound generation mechanism in these tools has been modeled. Firstly, the governing equations of the diaphragm and the horn and coupling between them are derived. By linearization, a parametric study is performed to find the optimum design points. Based on the eigenvalue analysis, it is shown that the sound generation in sonic soot cleaners is due to instability of the interaction between the diaphragm and the horn. Moreover, it is found that the sound wave frequency is approximately equal to the lowest fundamental frequency of the horn or diaphragm. Finally, the frequency content of an SSB voice is investigated.

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