<  Back to the Polytechnique Montréal portal

Numerical investigation of the impact of washcoat distribution on the filtration performance of gasoline particulate filters

Igor Belot, David Vidal, Martin Votsmeier, Robert E. Hayes and François Bertrand

Article (2020)

[img]
Preview
Accepted Version
Terms of Use: All rights reserved.
Download (2MB)
Cite this document: Belot, I., Vidal, D., Votsmeier, M., Hayes, R. E. & Bertrand, F. (2020). Numerical investigation of the impact of washcoat distribution on the filtration performance of gasoline particulate filters. Chemical Engineering Science, 221. doi:10.1016/j.ces.2020.115656
Show abstract Hide abstract

Abstract

A three-step numerical model sheds light on the impact of three-way catalyst (TWC) washcoat distribution within the cordierite porous wall of a clean gasoline particulate filter (GPF) on its filtration performance. The model relies on (1) the numerical reconstruction of porous wall sections with various washcoat distributions and coating amounts, generated using a novel set of erosion/dilation-based procedures applied on segmented X-ray computed tomography data, (2) the computation of the flow field using the lattice Boltzmann method, and (3) the prediction of soot capture efficiency by solving the Langevin equation. The impact of washcoat distribution and amount on the pressure drop, permeability, filtration efficiency, and filter quality factor is systematically investigated. For a non-uniform washcoat distribution, an unexpected decrease in filtration efficiency with an increase in washcoat amount is explained and this highlights the complexity of the effects generated by the deposition of washcoat within the porous wall of the filter.

Open Access document in PolyPublie
Department: Département de génie mécanique
Research Center: URPEI - Unité de recherche en procédés d'écoulements industriels
Date Deposited: 17 Dec 2021 11:25
Last Modified: 03 Apr 2022 01:15
PolyPublie URL: https://publications.polymtl.ca/9746/
Document issued by the official publisher
Journal Title: Chemical Engineering Science (vol. 221)
Publisher: Elsevier
Official URL: https://doi.org/10.1016/j.ces.2020.115656

Statistics

Total downloads

Downloads per month in the last year

Origin of downloads

Dimensions

Repository Staff Only