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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Abstract

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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