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:: year 6, Issue 1 (Journal of Acoustical Engineering Society of Iran 2018) ::
مجله علمی پژوهشی انجمن مهندسی صوتیات ایران 2018, 6(1): 39-45 Back to browse issues page
Modeling and simulation of the acoustic behavior of a muffler in a passenger car exhaust system
R. Talebitooti *, A.M. Choudari Khameneh
Abstract:   (2546 Views)
Muffler is one of the main components of an automotive exhaust system, which reduces the noise of the exhaust system. In this paper, modeling and simulation of the acoustic behavior of a muffler is presented with the aid of  an engineering software. For this purpose, firstly, an analytical model is presented to evaluate the sound transmission loss in cylindrical shells based on Sander's theory. Then, catalytic converter and muffler are modeled by considering the model's major dimensions in the engineering software. The comparison of the present results with previous studies shows the accuracy of the analytical model as well as the simulation results. In addition, the contour of sound pressure inside the catalytic converter and the muffler, as well as the direction of  the exhaust gas flow inside the muffler, indicate that the sound level created by Muffler is in the safe range according to the limitations posed by the standards.
 
Keywords: Muffler, Acoustic behavior, Sound pressure, Sound energy.
Full-Text [PDF 28 kb]   (771 Downloads)    
Type of Study: Research | Subject: Structural Acoustics
Received: 2018/06/13 | Accepted: 2018/08/24 | Published: 2018/09/22
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Talebitooti R, Choudari Khameneh A. Modeling and simulation of the acoustic behavior of a muffler in a passenger car exhaust system . مجله علمی پژوهشی انجمن مهندسی صوتیات ایران. 2018; 6 (1) :39-45
URL: http://joasi.ir/article-1-131-en.html


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year 6, Issue 1 (Journal of Acoustical Engineering Society of Iran 2018) Back to browse issues page
مجله علمی-پژوهشی انجمن علوم صوتی ایران Journal of Acoustical Society of Iran
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