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http://dx.doi.org/10.5050/KSNVE.2014.24.11.883

Numerical Analysis of Noise Reduction and Back-pressure for a Simple Expansion Chamber with a Partition  

Kim, Yeon Woo (Graduate School of Mechanical Engineering, Pusan National University)
Jeong, Weuibong (School of Mechanical Engineering, Pusan National University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.11, 2014 , pp. 883-889 More about this Journal
Abstract
Mufflers have been widely used in the exhaust system to reduce the noise. However, installing muffler may deteriorate the efficiency due to the increase of back pressure. Mufflers usually consist of partition plates and perforated holes in a expansion chamber. In this paper, the influences of the location of the partition and hole on the acoustic TL and back pressure were examined. The acoustic TL was predicted using virtual lab commercial software, while the back pressure were predicted using CFX commercial software. The results were used to set up a database for finding their trends. The optimal muffler model in user-interested frequency range could be selected by analyzing this database.
Keywords
Muffler; Noise Reduction; Transmission Loss; Back-pressure; Partition Plate; Computational Fluid Dynamics;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Kim, H. J., Lee, S. H. and Jeon, S. K. and Han, S. M., 2007, Design of Semi-anechoic Termination Using Taguchi's Method, Proceedings of the KSNVE Annual Autumn Conference, pp. 1005-1008.
2 Kwon, J., Jeong, W. B. and Hong, J. S., 2012, Effects of Fluid Velocity on Acoustic Transmission Loss of Simple Expansion Chamber, Transactions of the KSNVE, pp. 994-1002.   과학기술학회마을   DOI   ScienceOn
3 Jung, K. H., Hwang, W. G., Lee, Y. Y. and Kim, K. S., 2001, A study on Muffler's Transmission Loss and Backpressure Property, Proceedings of the KSNVE Annual Autumn Conference, pp. 676-681.
4 Tao, Z. and Seybert, A. F., 2003, A Review of Current Techniques for Measuring Muffler Transmission Loss, Proceedings SAE Noise and Vibration Conference,, pp. 2003-01-1653.
5 Bilawchuk, S. and Fyfe, K. R., 2003, Comparison and Implementation of the Various Numerical Methods used for Calculating Transmission Loss in Silencer Systems, Applied Acoustics, Vol. 64, Issue 9, pp. 903-916.   DOI   ScienceOn
6 ANSYS, CFX Rev 14 User Guide, 2011.
7 Doosan Commercial Engine Inc.(2014) Engine Specification of D1146T Model Retrieved September 11, 2014, from http://www.dscengine.com