A comprehensive method for analyzing acoustic transmission characteristics inside liquid filled pipelines

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (24) : 155-161.

GONG Jingfeng1,LI Biaobiao1,XUAN Lingkuan1,ZHUANG Qianxin1,LI Honggang2

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Abstract

In order to study the acoustic transfer characteristics inside a liquid filled pipeline, this paper proposes a comprehensive method for calculating the acoustic transfer characteristics inside the pipeline based on the transfer matrix method and the four terminal network model. Three methods are proposed to handle the connection between complex pipeline components and other pipeline components. Effectively combining the acoustic impedance characteristic parameters of pipeline components obtained through theoretical analysis and numerical experiments or experimental methods. Theoretical analysis and numerical experimental methods were used to compare and analyze the acoustic impedance parameters and acoustic transmission response of individual pipeline components, and the calculation results of the two methods are in good agreement. The analysis of the sound transmission characteristics of multiple straight pipe components shows that the method 1 proposed in this paper is more accurate in calculating the sound transmission characteristics inside the pipe. On this basis, the sound transmission characteristics of a multi-component system composed of complex valve components were further analyzed, and the calculation results are in good agreement with the numerical method, verifying the correctness of the acoustic characteristics analysis of the multi-component liquid filled pipeline system in this paper.

Key words

liquid filled pipeline / acoustic impedance / transfer matrix method / four terminal network / comprehensive method of sound transmission

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GONG Jingfeng1, LI Biaobiao1, XUAN Lingkuan1, ZHUANG Qianxin1, LI Honggang2. A comprehensive method for analyzing acoustic transmission characteristics inside liquid filled pipelines[J]. Journal of Vibration and Shock, 2024, 43(24): 155-161

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