This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Numerical Simulation of Diesel Particulate Filters in Exhaust Systems
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 17, 2011 by SAE International in United States
Annotation ability available
This paper documents a finite element approach to predict the attenuation of muffler and silencer systems that incorporate diesel particulate filters (DPF). Two finite element models were developed. The first is a micro FEM model, where a subset of channels is modeled and transmission matrices are determined in a manner consistent with prior published work by Allam and Åbom. Flow effects are considered at the inlet and outlet to the DPF as well as viscous effects in the channels themselves. The results are then used in a macro FEM model of the exhaust system where the transmission relationship from the micro-model is used to simulate the DPF. The modeling approach was validated experimentally on an example in which the plane wave cutoff frequency was exceeded in the chambers upstream and downstream to the DPF.
CitationHua, X., Liu, J., Herrin, D., and Elnady, T., "Numerical Simulation of Diesel Particulate Filters in Exhaust Systems," SAE Technical Paper 2011-01-1559, 2011, https://doi.org/10.4271/2011-01-1559.
- Allam, S. Åbom, M. Acoustic Modeling and Testing of Diesel Particulate Filters Journal of Sound and Vibration 288 255 273 2005
- Allam, S. Åbom, M. Sound Propagation in an Array of Narrow Porous Channels with Application to Diesel Particulate Filters Journal of Sound and Vibration 291 882 901 2006
- Munjal, M. L. Acoustic of Ducts and Mufflers John Wiley New York 1987
- Renneberger, D. Experimentelle Untersuchungen Zum akustischen Reflexionsfaktor Von Unstetigen Uuerschnittsänderungen in Einem Luftdurchströmten Rohr Acustica 19 222 235 1967
- Davies, P. O. A. L. Practical Flow Duct Acoustics Journal of Sound and Vibration 124 91 115 1988
- Pierce, A. D. Acoustics: An Introduction to Its Physical Principles and Applications 2 nd Acoustical Society of America New York 1991
- Mechel, F. P. Mertens, P. A. Schilz, W. M. Interaction between Air Flow and Airborne Sound in a Duct AMRL-TR-65-53 1965
- Keefe, D. H. Acoustic Wave Propagation in Cylindrical Ducts: Transmission Line Parameter Approximations for Isothermal and Nonisothermal Boundary Conditions Journal of the Acoustical Society of America 75 1 58 62 1984
- Wu, T. W. Zhang, P. Cheng, C. Y. R. Seybert, A. F. “Boundary Element Analysis of Mufflers with an Improved Method for Deriving the Four-Pole Parameters Journal of Sound and Vibration 217 767 779 1998
- Elnady, T. Åbom, M. “SIDLAB: New 1D Sound Propagation Simulation Software for Complex Duct Networks” Proceedings of the 13 th International Conference for Sound and Vibration Vienna 2006
- Lung, T. Y. Doige, A. G. “A Time-averaging Transient Testing Method for Acoustic Properties of Piping Systems and Mufflers,” Journal of the Acoustical Society of America 73 867 876 1983
- Tao, Z. Seybert, A. “A Review of Current Techniques for Measuring Muffler Transmission Loss,” SAE Technical Paper 2003-01-1653 2003 10.4271/2003-01-1653