Browse Publications Technical Papers 1999-01-1661
1999-05-17

Exhaust Muffler Design and Analysis Using a Boundary Element Method Based Computer Program 1999-01-1661

Typical automotive muffler designs contain complex internal components such as extended inlet/outlet tubes, thin baffles with eccentric holes, internal connecting tubes, perforated tubes, perforated baffles, flow plugs and sound-absorbing materials. An accurate performance prediction for highly complicated muffler designs would greatly reduce the effort in fabricating and testing of multiple design iterations for engineers. This paper discusses the use of a component-based computer simulation tool for design and analysis of exhaust mufflers. A comprehensive computer program based on the Direct Mixed-Body Boundary Element Method was developed to predict the transmission loss characteristics of muffler systems. The transmission loss is calculated by an improved four-pole method that does not require solving the boundary element matrix twice at each frequency, and hence, it is a significantly faster approach when compared to the conventional four-pole method. The numerical prediction of several muffler configurations shows very good agreement with measured results including the effects of temperature and mean flow.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

An Optimal Design Methodology for a Family of Perforated Mufflers

2005-26-053

View Details

JOURNAL ARTICLE

Practical Considerations when using the Two-Load Method to Determine the Transmission Loss of Mufflers and Silencers

2013-01-1881

View Details

TECHNICAL PAPER

Study of Perforated Mufflers of Circular and Elliptical Cross Sections Using Parametric Technique and Finite Element Methodology

2007-01-0895

View Details

X