单分散和多分散气泡液体中的线性压力波:慢速、快速和蒸发模式的衰减和传播速度。

IF 3.8 2区 物理与天体物理 Q1 ACOUSTICS
Tetsuya Kanagawa , Akihiro Nakamura
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引用次数: 0

摘要

本研究利用双流体模型的体积平均方程,从理论上研究了线性压力波在带有许多球形气泡的静止液体中的传播。利用推导出的线性频散对声速和衰减进行了评估。对单分散和多分散气泡液体进行了处理。为了精确描述衰减效应,采用了某些形式的气泡动力学方程和温度梯度模型。针对耗散效应,我们分析了线性弥散关系中出现的阻带。在双流体模型中,即使考虑了耗散效应,也无法解决波数在共振频率下发散到无穷大的不便。此外,还证明了在频率中间终止该波长值的有效性。为了确定能够准确预测热传导和声辐射的线性色散关系,将波的传播速度和衰减系数与一些实验数据和现有模型进行了比较。结果表明,要准确预测除高频范围外的传播速度和衰减、共振频率范围内的相位速度或高频范围内的衰减,应适当设置热传导和声辐射。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Linear pressure waves in mono- and poly-disperse bubbly liquids: Attenuation and propagation speed in slow and fast and evanescent modes
Using volumetric averaged equations from a two-fluid model, this study theoretically investigates linear pressure wave propagation in a quiescent liquid with many spherical gas bubbles. The speed and attenuation of sound are evaluated using the derived linear dispersion. Mono- and poly-disperse bubbly liquids are treated. To precisely describe the attenuation effect, some forms of bubble dynamics equations and temperature gradient models are employed. Focusing on the dissipative effect, we analyze the stop band that occurs in the linear dispersion relation. In the two-fluid model, even if the dissipation effect is considered, the inconvenience that the wavenumber diverges to infinity in the resonance frequency cannot be resolved. Additionally, the validity of terminating that wavenumber value in the middle of the frequency is demonstrated. To determine a linear dispersion relation that can exactly predict thermal conduction and acoustic radiation, wave propagation velocities and attenuation coefficients are compared with some experimental data and existing models. The results show that thermal conduction and acoustic radiation should be set appropriately to accurately predict the propagation velocity and attenuation except in the high frequency range, the phase velocity in the resonance frequency range, or the attenuation in the high frequency range.
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来源期刊
Ultrasonics
Ultrasonics 医学-核医学
CiteScore
7.60
自引率
19.00%
发文量
186
审稿时长
3.9 months
期刊介绍: Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.
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