Nonlinear acoustic wave generation in a three-phase seabed

Generation of an acoustic wave by two pump sound waves is studied in a three-phase marine sediment that consists of a solid frame and the pore water with air bubbles in it. To avoid shock-wave formation the interaction is considered in the frequency range where there is a significant amount of sound...

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Bibliographic Details
Published in:arXiv.org 2015-03
Main Authors: Kukarkin, A B, Pushkina, N I, Zhileikin, Ya M
Format: Article
Language:English
Subjects:
Acoustic velocity
Acoustic waves
Air bubbles
Bubbles
Dependence
Frequency ranges
Nonlinear equations
Numerical analysis
Sea beds
Shock waves
Sound waves
Wave generation
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Summary:Generation of an acoustic wave by two pump sound waves is studied in a three-phase marine sediment that consists of a solid frame and the pore water with air bubbles in it. To avoid shock-wave formation the interaction is considered in the frequency range where there is a significant amount of sound velocity dispersion. Nonlinear equations are obtained to describe the interaction of acoustic waves in the presence of air bubbles. An expression for the amplitude of the generated wave is obtained and numerical analysis of its dependence on distance and on the resonance frequency of bubbles is performed.
ISSN:2331-8422
DOI:10.48550/arxiv.1503.00901