Acoustic performance evaluation for ducts containing porous materials

Autor:	Amine Makni, Marwa Kani, Ahmad Abosrea, Mohamed Taktak, Mabrouk Chaabane, Tamer Elnady, Mohamed Haddar
Rok vydání:	2019
Předmět:	010302 applied physics Materials science Acoustics and Ultrasonics Scattering Acoustics Sound propagation 01 natural sciences Computer Science::Sound 0103 physical sciences Duct (flow) Transmission coefficient Experimental methods Porosity Porous medium 010301 acoustics Parametric statistics
Zdroj:	Applied Acoustics. 147:15-22
ISSN:	0003-682X
DOI:	10.1016/j.apacoust.2018.08.002
Popis:	The study of the sound propagation in duct systems containing a porous material is important because they are used in many industrial applications. The acoustic behavior of this kind of ducts which are supposed two-port systems can be modeled by many matrices like the reflection, transmission, mobility, transfer and scattering matrices. In this work, Theoretical and experimental methods are used to evaluate the acoustic performance of duct systems containing one or two porous materials. To reach this goal, the Transmission coefficient was calculated by determining transfer and scattering matrices. The comparison between theoretical and experimental results shows a good agreement between results with some differences due to the no respect of the hypothesis of the rigidity of the duct. A parametric study allowed estimating the more influent parameters on the acoustic behavior of duct systems containing porous materials.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e841705cc80fe14db52c0a0490b63adc https://doi.org/10.1016/j.apacoust.2018.08.002 Zobrazit plný text záznamu Full Text from ScienceDirect