Analysis and design guidelines for fork muffler with H-connection

Sagar, Vidya and Munjal, M L (2017) Analysis and design guidelines for fork muffler with H-connection. In: APPLIED ACOUSTICS, 125 . pp. 49-58.

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Abstract

The Herschel-Quincke (H-Q) tube phenomenon has been applied to favorably alter the performance of the Fork muffler (or dual muffler) by interconnecting the two halves of the fork muffler system by means of a tube (H-connection). Although there is only one additional tube in the inter-connected fork muffler (fork muffler with H-connection), yet it substantially changes the acoustic impedance felt at the source. In order to understand the effect of the H-connection, we need to carry out the analysis of the whole exhaust system. This paper first deals with the analysis of the fork muffler (which falls under the category of single-inlet multiple-outlet muffler) with and without H-connection using the transfer matrix approach, the results of which have been validated by a means of a 3-D finite element analysis. In general, the convective effect of the mean flow plays very little role in the performance of the muffler. But, the mean flow effect at the H-junctions may be crucial to the effectiveness of H-connection and its effect has been taken into account in the parametric study of the fork muffler with H-connection. The dissipative effect of the mean flow at the perforations has been considered throughout the analysis. The parametric study of the fork muffler with H-connection is then carried out to construct the design guidelines for efficient use of the H-connection in designing exhaust systems. (C) 2017 Elsevier Ltd. All rights reserved.

Item Type:	Journal Article
Publication:	APPLIED ACOUSTICS
Additional Information:	Copy right for this article belongs to the ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Department/Centre:	Division of Mechanical Sciences > Mechanical Engineering
Date Deposited:	07 Jul 2017 06:02
Last Modified:	07 Jul 2017 06:02
URI:	http://eprints.iisc.ac.in/id/eprint/57308

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