Modelling of low-frequency acoustic wave propagation in dilute gas-bubbly liquids

2021 ◽  
pp. 106979
Author(s):  
Zizhen Wang ◽  
Weidong Zhou ◽  
Tengfei Shu ◽  
Qilong Xue ◽  
Rui Zhang ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Low Frequency ◽  
Acoustic Wave Propagation ◽  
Bubbly Liquids ◽  
Dilute Gas

scholarly journals Complex for experimental research of elastic wave interactions with ice layer

2019 ◽  
Vol 127 ◽  
pp. 02006
Author(s):  
Wenjian Chen ◽  
Vasily Chernenko ◽  
Victor Petrosyants ◽  
Vladimir Grishchenko
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Physical Modeling ◽  
Low Frequency ◽  
Signal Propagation ◽  
Acoustic Wave Propagation ◽  
Wave Interactions ◽  
Water Ice ◽  
Earthquake Sources ◽  
Ice Surface

An adjustable pneumatic generator of acoustic signals with shock excitation was developed. Measuring and computing complex was also created to investigate elastic acoustic wave propagation along ice surface. Experiments on low-frequency acoustic signal propagation from the pneumatic generator were carried out in «water-ice-air» system. The possibility to apply the developed measuring and computing complex for physical modeling of acoustic wave propagation from earthquake sources along ice cover was confirmed.

Impulse and Low Frequency Acoustic Wave Propagation in Granular Beds

2000 ◽  
Vol 627 ◽  
Author(s):  
Surajit Sen ◽  
Marian Manciu ◽  
Victoria Tehan ◽  
Alan J. Hurd
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Sound Propagation ◽  
Low Frequency ◽  
Acoustic Wave Propagation ◽  
Impulse Propagation ◽  
Gravitational Loading ◽  
Granular Chains ◽  
Dynamical Simulations ◽  
Nonlinear Nature

ABSTRACTThe study of sound propagation in granular beds at frequencies exceeding a MHz has been a subject of study for many years. Much remains to be learnt about sound propagation at lower frequencies. We shall present our studies on the problem of impulse propagation and briefly comment on low frequency acoustic propagation in model granular beds using particle dynamical simulations. The following results will be briefly discussed. (i) Impulses propagating as solitary waves in 1-D granular chains with Hertz contacts in the absence of precompression. (ii) The effects of uniform precompression and gravitational loading on wave propagation. (iii) Impulse propagation in 3-D granular beds. The research presented shall highlight the intrinsically nonlinear nature of wave propagation in granular beds.

Acoustic wave propagation in two dimensional sheared ducted flows

1997 ◽  
Author(s):  
E. Longatte ◽  
P. Lafon ◽  
S. Candel ◽  
E. Longatte ◽  
P. Lafon ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Two Dimensional ◽  
Acoustic Wave Propagation
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