Sound Transmission in a Duct with Sudden Area Expansion, Extended Inlet, and Lined Walls in Overlapping RegionReport as inadecuate




Sound Transmission in a Duct with Sudden Area Expansion, Extended Inlet, and Lined Walls in Overlapping Region - Download this document for free, or read online. Document in PDF available to download.

Advances in Acoustics and Vibration - Volume 2016 2016, Article ID 9485163, 8 pages -

Research ArticleEngineering Faculty, Department of Mechatronics, Karabuk University, 78100 Karabuk, Turkey

Received 19 July 2016; Accepted 26 October 2016

Academic Editor: Toru Otsuru

Copyright © 2016 Ahmet Demir. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The transmission of sound in a duct with sudden area expansion and extended inlet is investigated in the case where the walls of the duct lie in the finite overlapping region lined with acoustically absorbent materials. By using the series expansion in the overlap region and using the Fourier transform technique elsewhere we obtain a Wiener-Hopf equation whose solution involves a set of infinitely many unknown expansion coefficients satisfying a system of linear algebraic equations. Numerical solution of this system is obtained for various values of the problem parameters, whereby the effects of these parameters on the sound transmission are studied.





Author: Ahmet Demir

Source: https://www.hindawi.com/



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