Title: Modelling of chamber mufflers by four-pole electrical ducts

Authors: Z. Petronijevic, A. Kojic

Addresses: Faculty of Mechanical Engineering, Sestre Janjic 6, 34000 Kragujevac, Yugoslavia. ' Faculty of Mechanical Engineering, Sestre Janjic 6, 34000 Kragujevac, Yugoslavia

Abstract: In this paper, we present a method for modelling of chamber mufflers by four-pole electrical ducts. The basic equations of the electrical ducts as the four-poles are first derived in the paper. Based on the electrical-acoustic analogy, the muffler elements are represented by four-pole electrical ducts. The acoustic pressure is analogous to voltage, while the volumetric velocity corresponds to current. Transmission loss (TL) is selected as a muffler characteristic. Some numerical results are given in the paper for various chamber diameters and lengths. Results are compared to those obtained with other methods.

Keywords: coefficients; current; four-pole electrical ducts; modelling; chamber mufflers; vehicle noise; voltage; vehicle design; transmission loss.

DOI: 10.1504/IJVD.1996.061980

International Journal of Vehicle Design, 1996 Vol.17 No.1, pp.92 - 104

Available online: 28 May 2014 *

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