Acoustics interaction in a complex piping network with multiple pulsatile sources
Acoustics interaction in a complex piping network with multiple pulsatile sources
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DOI：
10.1016/j.jsv.2022.116863
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发表时间：
2022-03
影响因子：
4.7
通讯作者：
F. Ahmed;I. Eames;A. Azarbadegan;E. Moeendarbary
中科院分区：
文献类型：
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作者：
F. Ahmed;I. Eames;A. Azarbadegan;E. Moeendarbary
分析了多个脉动源与声学特征模式之间的相互作用，阐明了声源特性和对比相位差对多分支充液复杂管网声学响应的影响。为了说明这一点，用一维线性模型分析了两个往复泵在两个分支网络中运行时的相互作用。声源和声本征模之间的相互作用会导致声学响应的增强或抑制，这取决于声源之间的空间间隔和它们的相位差。分析了由两个往复泵组成的三分支网络单乙二醇泵组件驱动频率扫频的声场测量结果。该线性模型捕获了现场测量数据的近似共振轮廓。在实际情况中，平面声波衰减的存在受到与管件相关的损失的影响。
The interactions between multiple pulsatile sources and the acoustic eigenmodes are analysed to elucidate the influence of source characteristics and contrasting phase differences on the acoustic response in a liquid-filled complex piping network with multiple branches. For illustration, the interactions between two reciprocating pumps operating in a two-branched network are analysed using a one-dimensional linear model. The interactions between sources and acoustic eigenmodes lead to enhanced or suppressed acoustic responses depending on the spatial separation between the sources and their phase differences. The acoustic field measurements from the sweep of driving frequency of a mono-ethylene-glycol (MEG) pump module with two reciprocating pumps in a three-branched network are analysed. The linear model captures the approximate resonance profile of the field measurement data. The presence of plane acoustic wave attenuation in the practical case is influenced by the losses associated with pipe fittings.