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IMechE Part D J Paper DPF 2D model.pdf (357.44 kB)

A finite-volume-based two-dimensional wall-flow diesel particulate filter regeneration model

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journal contribution
posted on 2014-08-27, 12:11 authored by Ming-Chiat Law, Andrew Clarke, Colin GarnerColin Garner, Andrew Williams
Many existing diesel particulate filter (DPF) models do not sufficiently describe the actual physiochemical processes that occur during the regeneration process. This is due to the various assumptions made in the models. To overcome this shortcoming, a detailed twodimensional DPF regeneration model with a multistep chemical reaction scheme is presented. The model solves the variable density, multicomponent conservation equations by the pressure implicit with splitting of operators (PISO) scheme for inlet and outlet channels as well as the porous soot layer and filter wall. It includes a non-thermal equilibrium (NTE) model for the energy equation for porous media. In addition, for the first time, experiments on the DPF were conducted to determine the interstitial heat transfer coefficient inside the DPF porous wall. The results compare well with an in-house one-dimensional model and subsequently this was used in the new two-dimensional model. By using this detailed two-dimensional model, some interesting observations of the DPF regeneration process were revealed. These included flow reversals and asymmetry in the filter channels.

Funding

The authors gratefully acknowledge Loughborough University and the DTI/DfT Foresight Vehicle ‘LOCOFILT’ Programme for supporting this research. Perkins Engines and the Royal Academy of Engineering are also gratefully acknowledged for supporting the authors.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING

Volume

222

Issue

D5

Pages

829 - 857 (29)

Citation

LAW, M.C. ... et al., 2008. A finite-volume-based two-dimensional wall-flow diesel particulate filter regeneration model. Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 222(5), pp.829-857.

Publisher

Sage (© IMechE)

Version

  • AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2008

ISSN

0954-4070

Language

  • en