Simulation of diesel particulate filters in large exhaust systems
Hua, X.; Herrin, D. W.; Wu, T. W.; Elnady, Tamer;
Abstract
The transmission loss of silencer systems that incorporate diesel particulate filters (DPF) was predicted using numerical simulation. The model developed by Allam and Åbom, which assumes plane wave propagation, was used to describe the DPF. However, three-dimensional wave propagation was permitted in the airspace upstream and downstream to the DPF. The modeling approach was validated experimentally for a case in which the plane wave cutoff frequency was exceeded in the airspaces upstream and downstream with good agreement. The assumption of plane wave behavior in the DPF was confirmed by modeling 81-cells of a DPF using an acoustic finite element model. The finite element analysis demonstrated that plane wave propagation could be assumed in the DPF regardless of the diameter of the DPF provided that the cross-sectional dimension of a cell is much smaller than an acoustic wavelength. © 2013 Elsevier Ltd. All rights reserved.
Other data
Title | Simulation of diesel particulate filters in large exhaust systems | Authors | Hua, X.; Herrin, D. W.; Wu, T. W.; Elnady, Tamer | Keywords | Boundary element method;Diesel particulate filter;Finite element method;Mufflers | Issue Date | 1-Jul-2013 | Publisher | ELSEVIER SCI LTD | Journal | Applied Acoustics | Volume | 74 | Issue | 12 | Start page | 1326 | End page | 1332 | ISSN | 0003682X | DOI | 10.1016/j.apacoust.2013.05.009 | Scopus ID | 2-s2.0-84879391886 | Web of science ID | WOS:000324227100003 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.