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
journal contribution
posted on 2014-08-27, 12:11 authored by Ming-Chiat Law, Andrew Clarke, Colin GarnerColin Garner, Andrew WilliamsMany 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 ENGINEERINGVolume
222Issue
D5Pages
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
2008ISSN
0954-4070Publisher version
Language
- en