The solution of sound propagation modeling problems for environment impact assessment by the mode parabolic equations methoda).

IF 2.1 2区 物理与天体物理 Q2 ACOUSTICS Journal of the Acoustical Society of America Pub Date : 2024-11-01 DOI:10.1121/10.0034424
Andrey G Tyshchenko, Mikhail A Sorokin, Sergey B Kozitskiy, Pavel S Petrov
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Abstract

The method of sound propagation modeling based on the mode parabolic equations (MPEs) theory is applied to the verification scenarios for environmental impact assessment. The results for selected scenarios from the 2022 Cambridge Joint Industry Programme Acoustic Modelling Workshop and the configuration of the computational programs AMPLE and MPE for these scenarios is discussed. Furthermore, it is revealed how the results for these scenarios change in the case of the bottom slope across and along the propagation path. It is observed that for the cross-slope propagation scenario, the distribution of acoustic energy over decidecade frequency bands does not depend on the slope angle and is practically the same as that for range-independent environment. At the same time, the dependence of energy distribution is noticeable for up- and downslope propagation scenarios, where greater slope angles result in higher propagation loss. It is also shown that MPEs are capable of adequately handling typical sound propagation problems related to the environmental impact assessment for frequencies up to 1000 Hz. A possibility of using frequency-dependent mesh size and number of modes must be implemented in codes based on this approach.

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用模式抛物方程法解决环境影响评估中的声传播模型问题a).
基于模式抛物线方程(MPEs)理论的声传播建模方法被应用于环境影响评估的验证方案。讨论了 2022 年剑桥联合工业计划声学建模研讨会上选定方案的结果,以及针对这些方案的 AMPLE 和 MPE 计算程序的配置。此外,还揭示了在底部斜坡横跨传播路径和沿传播路径的情况下,这些方案的结果是如何变化的。据观察,在跨斜坡传播情况下,声能在十进制频带上的分布与斜坡角度无关,实际上与不依赖范围的环境下的声能分布相同。同时,在上坡和下坡传播情况下,能量分布的依赖性很明显,坡角越大,传播损耗越大。研究还表明,MPE 能够充分处理与环境影响评估有关的典型声音传播问题,频率可达 1000 Hz。必须在基于这种方法的代码中实现使用与频率相关的网格大小和模式数量的可能性。
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来源期刊
CiteScore
4.60
自引率
16.70%
发文量
1433
审稿时长
4.7 months
期刊介绍: Since 1929 The Journal of the Acoustical Society of America has been the leading source of theoretical and experimental research results in the broad interdisciplinary study of sound. Subject coverage includes: linear and nonlinear acoustics; aeroacoustics, underwater sound and acoustical oceanography; ultrasonics and quantum acoustics; architectural and structural acoustics and vibration; speech, music and noise; psychology and physiology of hearing; engineering acoustics, transduction; bioacoustics, animal bioacoustics.
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