3D reconstruction and pore-scale modeling of coated catalytic filters for automotive exhaust gas aftertreatment
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F19%3A00497313" target="_blank" >RIV/61388998:_____/19:00497313 - isvavai.cz</a>
Alternative codes found
RIV/60461373:22340/19:43919370 RIV/49777513:23640/19:43955070
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0920586117308416" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0920586117308416</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cattod.2017.12.025" target="_blank" >10.1016/j.cattod.2017.12.025</a>
Alternative languages
Result language
angličtina
Original language name
3D reconstruction and pore-scale modeling of coated catalytic filters for automotive exhaust gas aftertreatment
Original language description
This paper introduces a newly developed methodology for the pore-scale simulation of flow, diffusion and reaction in the coated catalytic filter. 3D morphology of the porous filter wall including the actual distribution of catalytic material is reconstructed from X-ray tomography (XRT) images and further validated with the mercury intrusion porosimetry (MIP). The reconstructed medium is then transformed into simulation mesh for OpenFOAM. Flow through free pores in the substrate as well as through the coated zones is simulated by porousSimpleFoam solver, while an in-house developed solver is used for component diffusion and reactions.nThree cordierite filter samples with different distribution of alumina-based coating ranging from in-wall to onwall are examined. Velocity, pressure and component concentration profiles are calculated enabling the prediction of permeability and component conversion depending on the actual microstructure of the wall. Thensimulation results suggest that the gas predominantly flows through remaining free pores in the filter wall and cracks in the coated layer. The mass transport into the coated domains inside the filter wall is enabled mainly by diffusion. Large domains of compact catalytic coating covering complete channel wall result in a significant increase of pressure drop as the local permeability of the coating is two orders of magnitude smaller than that of bare filter wall.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20402 - Chemical process engineering
Result continuities
Project
<a href="/en/project/LO1402" target="_blank" >LO1402: CENTEM+</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Catalysis Today
ISSN
0920-5861
e-ISSN
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Volume of the periodical
320
Issue of the periodical within the volume
January
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
10
Pages from-to
165-174
UT code for WoS article
000448295200018
EID of the result in the Scopus database
2-s2.0-85039838260