| Issue |
MATEC Web Conf.
Volume 355, 2022
2021 International Conference on Physics, Computing and Mathematical (ICPCM2021)
|
|
|---|---|---|
| Article Number | 01016 | |
| Number of page(s) | 9 | |
| Section | Investigation in Physics and Materials | |
| DOI | https://doi.org/10.1051/matecconf/202235501016 | |
| Published online | 12 January 2022 | |
Analytic model research of sound propagation in pipe wall with sound absorption
1 Beijing Center for Physical and Chemical Analysis, Beijing, China
2 Beijing Academy of Science and Technology, Beijing, China
3 Beijing Center for Physical and Chemical Analysis, Beijing, China
4 Beijing Center for Physical and Chemical Analysis, Beijing, China
* Corresponding author: liuqj@bjast.ac.cn
There are a lot of principles for sound transmission in the pipeline for whether sound transmission structure or noise reduction structure. Even in ultrasonic testing, there is a large number of principles for using pipeline sound transmission. Based on the sound propagation model and the boundary conditions of pipe wall sound absorption, the sound propagation equation for pipe wall sound absorption is given by establishing mathematical model and solving mathematical equation in this paper. When the distribution of sound field along the cross-section of the pipe (outlet) is ignored, the transmission efficiency of sound with different frequencies can be calculated or the sound absorption efficiency can be calculated. The analytical solution of the sound transmission equation in the pipeline has great theoretical significance and practical value for guiding the structural design of sound transmission and noise reduction, improving the calculation efficiency and verifying the numerical analysis results.
Key words: Sound propagation equation / Sound transmission in pipeline / Sound absorption structure
© The Authors, published by EDP Sciences, 2022
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