Modern Methods of Sound Propagation Modeling Based on the Expansion of Acoustic Fields over Normal Modes

IF 0.9 4区物理与天体物理 Q4 ACOUSTICS

Acoustical Physics Pub Date : 2023-11-16 DOI:10.1134/S1063771023600316

A. G. Tyshchenko, S. B. Kozitskii, M. S. Kazak, P. S. Petrov

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Abstract—A review of modern methods of modeling acoustic fields based on their representation as a superposition of normal modes is presented. Most of the described methods are based on an approach to calculating mode amplitudes by solving parabolic equations of various types, both narrow-angle and wide-angle. We also consider two-dimensional methods for calculating acoustic fields, to which the above-mentioned three-dimensional approaches are reduced in the absence of dependence of the field and medium parameters on one of the horizontal coordinates. The computation of both time-harmonic acoustic fields and pulsed sound signals is discussed. A number of numerical examples are considered in which such calculations are performed taking into account three-dimensional sound propagation effects. For the first time within the framework of this approach, the calculation of particle accelerations at the pulse signal reception points, as well as the calculation of the energy density flux of the vector field were performed.

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基于声场在正模上展开的现代声传播建模方法

摘要:综述了基于正态模态叠加表示声场的现代建模方法。所描述的大多数方法都是基于通过求解各种类型的抛物方程(包括窄角和广角)来计算模态振幅的方法。我们还考虑了计算声场的二维方法，在没有场和介质参数依赖于其中一个水平坐标的情况下，上述三维方法可以简化为二维方法。讨论了时谐声场和脉冲声信号的计算。考虑了一些数值例子，在这些计算中考虑了三维声音传播效应。在该方法的框架内，首次计算了脉冲信号接收点处的粒子加速度，以及矢量场的能量密度通量。

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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来源期刊

Acoustical Physics 物理-声学

CiteScore

1.60

自引率

50.00%

发文量

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.