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Plane wave analysis of side inlet/outlet chamber mufflers with mean flow

Munjal, ML (1997) Plane wave analysis of side inlet/outlet chamber mufflers with mean flow. In: Applied Acoustics, 52 (2). pp. 165-175.


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Integration of side inlet and/or side outlet expansion chambers into the rest of the muffler system for prediction of overall transmission loss (TL) or insertion loss requires knowledge of the four-pole parameters of these elements for propagation of plane waves in a moving medium. In this paper, transfer matrices have been derived for side inlet and side outlet elements for typically small mean flow Mach numbers. These are validated against the 3-D model existing in the literature for a stationary medium and for acoustically long chambers. The effect of mean flow on TL of the side inlet/outlet chambers has been demonstrated. Incidentally, it has been shown that side inlets and side outlets behave more or less like extended inlets and extended outlets, respectively

Item Type: Journal Article
Publication: Applied Acoustics
Publisher: Elsevier Science Ltd
Additional Information: The copyright for this article belongs to Elsevier Science Ltd
Keywords: Mufflers;duct acoustics
Department/Centre: Division of Mechanical Sciences > Mechanical Engineering
Date Deposited: 17 Aug 2004
Last Modified: 19 Sep 2010 04:14
URI: http://eprints.iisc.ac.in/id/eprint/1290

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