Gas Void Fraction Estimation in Gas-Bubble-Contained Sands with Difference Frequency Waves SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 8 time in Scopus
Title
Gas Void Fraction Estimation in Gas-Bubble-Contained Sands with Difference Frequency Waves
Author(s)
Kim, Byoung-Nam; Yoon, Suk Wang; Choi, Bok Kyoung; Jung, Seom-Kyu
KIOST Author(s)
Kim, Byoung Nam(김병남)Choi, Bok Kyoung(최복경)
Publication Year
2012-07
Abstract
A nonlinearity parameter can be used for the estimation of the gas void fraction in gassy sediment. If two primary acoustic waves of different frequencies are incident on gassy sediment, nonlinear acoustic waves can be generated at the difference frequency. In the present study, the parametric acoustic array theory for the difference frequency wave was employed to estimate the nonlinearity parameters of gas-bubble-contained sands under laboratory conditions. The nonlinearity parameters of the sands were estimated between 10(3) and 10(4). Then, the estimated gas void fractions in the sands were between 10(-6) and 10(-4). They were similar to those estimated through the sound speed variation method. However, this linear acoustic method could not be applied to gas-bubble-contained sand with a low gas void fraction, because the sound speed variation was not observed in the sand. This study suggests that the nonlinear acoustic method seems very feasible to estimate the gas void fraction in gassy sediment with a low gas content. (C) 2012 The Japan Society of Applied Physics
ISSN
0021-4922
URI
https://sciwatch.kiost.ac.kr/handle/2019.kiost/3510
DOI
10.1143/JJAP.51.07GD02
Bibliographic Citation
JAPANESE JOURNAL OF APPLIED PHYSICS, v.51, no.7, 2012
Publisher
IOP PUBLISHING LTD
Subject
ACOUSTIC-WAVES; SEDIMENTS; ATTENUATION; SCATTERING; DENSITY; WATER; SEA
Type
Article
Language
English
Document Type
Article
Publisher
IOP PUBLISHING LTD
Related Researcher
Research Interests

Underwater Acoustics,Bubble Acoustics,Marine Defense & Safety,수중음향,기포음향,해양방위·안전

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