关于带气泡粘稠液体层形式的吸音涂层

IF 0.9 4区 物理与天体物理 Q4 ACOUSTICS Acoustical Physics Pub Date : 2024-05-07 DOI:10.1134/S1063771024601407
L. I. Kazakov
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摘要

该研究考虑了为带有惯性或隔音墙的水声测量槽和腔室制作宽带吸音涂层的可能性,涂层由一层带有气泡的粘性液体组成。利用著名的声音在带有气泡的液体介质中传播的理论以及 Kramers-Kronig 积分扩散方程对涂层进行了计算。结果表明,气泡的体积大小分布函数在其整个大小范围内应该是恒定的。设计了一种粘性液体,通过增加周围液体的粘性损耗和小的热损耗,将气泡阻尼提高到与涂层最佳值相等的数量级。低频补偿谐振器用于隔音墙涂层。本文列举了几个计算涂层声学特性的例子。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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On A Sound-Absorbing Coating in the form of a Layer of a Viscous Liquid with Bubbles

The study considers the possibility of creating a broadband sound-absorbing coating for hydroacoustic measuring tanks and chambers with inertial or soundproof walls, consisting of a layer of viscous liquid with gas bubbles. The coatings are calculated using the well-known theory of sound propagation in a liquid medium with bubbles, as well as the Kramers–Kronig integral dispersion equations. It is shown that the volumetric size distribution function of bubbles should be constant over the entire range of their sizes. A viscous liquid is designed to increase bubble damping to a value on the order of unity that is optimal for coatings by adding viscous losses in the surrounding liquid to small thermal losses. Low-frequency compensating resonators are used in coatings for soundproof walls. Several examples of calculating the acoustic characteristics of coatings are given.

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来源期刊
Acoustical Physics
Acoustical Physics 物理-声学
CiteScore
1.60
自引率
50.00%
发文量
58
审稿时长
3.5 months
期刊介绍: Acoustical Physics is an international peer reviewed journal published with the participation of the Russian Academy of Sciences. It covers theoretical and experimental aspects of basic and applied acoustics: classical problems of linear acoustics and wave theory; nonlinear acoustics; physical acoustics; ocean acoustics and hydroacoustics; atmospheric and aeroacoustics; acoustics of structurally inhomogeneous solids; geological acoustics; acoustical ecology, noise and vibration; chamber acoustics, musical acoustics; acoustic signals processing, computer simulations; acoustics of living systems, biomedical acoustics; physical principles of engineering acoustics. The journal publishes critical reviews, original articles, short communications, and letters to the editor. It covers theoretical and experimental aspects of basic and applied acoustics. The journal welcomes manuscripts from all countries in the English or Russian language.
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