Journal
CHEMICAL ENGINEERING SCIENCE
Volume 221, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2020.115656
Keywords
Gasoline particulate filter; Three-way catalyst uniformity; Soot filtration; Structure reconstruction; Porous media; Lattice Boltzmann method
Categories
Funding
- Natural Sciences and Engineering Research Council of Canada [STPGP-493797-16]
- Collaborative Research and Training Experience program in Simulation-based Engineering Science (Genie Par la Simulation) [CREATE-481695-2016]
- Calcul Quebec/Compute Canada
Ask authors/readers for more resources
A three-step numerical model sheds light on the impact of three-way catalyst washcoat distribution within the cordierite porous wall of a clean gasoline particulate filter 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 morphological image processing operations 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. (C) 2020 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available