Numerical simulation of diesel particulate filters in exhaust systems

X. Hua, J. Liu, D. W. Herrin, T. Elnady

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


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.

Original languageEnglish
JournalSAE Technical Papers
StatePublished - 2011
EventSAE 2011 Noise and Vibration Conference and Exhibition, NVC 2011 - Rapids, MI, United States
Duration: May 16 2011May 19 2011

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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