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Modeling perforates in mufflers using two-ports
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Flow acoustics.ORCID iD: 0000-0001-7898-8643
2010 (English)In: Journal of Vibration and Acoustics-Transactions of the ASME, ISSN 1048-9002, Vol. 132, no 6, 061010- p.Article in journal (Refereed) Published
Abstract [en]

One of the main sources of noise of a vehicle is the engine where its noise is usually damped by means of acoustic mufflers A very common problem in the modeling of automotive mufflers is that of two flow ducts coupled through a perforate A new segmentation approach is developed here based on two port analysis techniques in order to model perforated pipes using general two port codes which are widely available Examples are given for simple muffler configurations and the convergence of the technique is investigated based on the number of segments used The results are compared with closed form solutions form the literature Finally an analysts of a complicated multi chamber perforated muffler system is presented The two port simulation results show good agreement with both the measurements and the simulations using the classical four port elements [DOI 10 1115/1 4001510]

Place, publisher, year, edition, pages
2010. Vol. 132, no 6, 061010- p.
National Category
Fluid Mechanics and Acoustics
URN: urn:nbn:se:kth:diva-29366DOI: 10.1115/1.4001510ISI: 000285430900010ScopusID: 2-s2.0-78751483259OAI: diva2:394564
EU, European Research Council, G3RD CT-2001-0511
QC 20110203Available from: 2011-02-03 Created: 2011-02-01 Last updated: 2012-03-29Bibliographically approved

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Åbom, MatsAllam, Sabry
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