管道网络中声学预测的多端口散射矩阵形式

IF 1 3区 物理与天体物理 Q4 ACOUSTICS
Cyril Calmettes, E. Perrey-Debain, E. Lefrançois, J. Caillet
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引用次数: 0

摘要

管道声网络建模通常使用传输矩阵形式进行,该形式仅限于低频范围。本工作的目的是通过考虑多模声传播,将其扩展到更高的频率。第一步是通过有限元法计算各单元的多端口多模态散射矩阵。第二步是根据研究中高频宽带噪声时常用的假设,将其转化为声功率的散射矩阵。将该方法应用于膨胀室消声器和空调管路等典型元件。在所有情况下,将潮流模型与基于传输损耗的有限元解进行比较。结果表明,该简化模型是分析暖通空调(HVAC)管道网络中复杂网络的可靠工具。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A multi-port scattering matrix formalism for the acoustic prediction in duct networks
Duct acoustic network modeling is commonly carried out using the transfer matrix formalism which is limited to the low frequency range. The aim of this work is to extend it to higher frequencies by taking into account the multi-mode acoustic propagation. The first step is to compute, via Finite Element Method (FEM), the multi-port multi-modal scattering matrix of each element. The second step is to transform it into a scattering matrix for the acoustic power, relying on assumptions which are often used for the study of medium-to-high frequency broadband noise. The method is applied to typical elements such as expansion chamber mufflers and air conditioning veins. In all cases, the power-flow model is compared to the FEM solution in terms of Transmission Losses. It is concluded that this simplified model is a reliable tool for the analysis of complex networks encountered in Heat and Ventilation Air Conditioning (HVAC) duct networks.
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来源期刊
Acta Acustica
Acta Acustica ACOUSTICS-
CiteScore
2.80
自引率
21.40%
发文量
0
审稿时长
12 weeks
期刊介绍: Acta Acustica, the Journal of the European Acoustics Association (EAA). After the publication of its Journal Acta Acustica from 1993 to 1995, the EAA published Acta Acustica united with Acustica from 1996 to 2019. From 2020, the EAA decided to publish a journal in full Open Access. See Article Processing charges. Acta Acustica reports on original scientific research in acoustics and on engineering applications. The journal considers review papers, scientific papers, technical and applied papers, short communications, letters to the editor. From time to time, special issues and review articles are also published. For book reviews or doctoral thesis abstracts, please contact the Editor in Chief.
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