Geometrically realistic macro-scale model for multi-scale simulations of catalytic filters for automotive gas aftertreatment

Kód výsledku v IS VaVaI

RIV/60461373:22340/20:43921542 - isvavai.cz

Nalezeny alternativní kódy

RIV/61388998:_____/20:00540987

Výsledek na webu

http://www2.it.cas.cz/fm/im/im/proceeding/2020/11

DOI - Digital Object Identifier

10.14311/TPFM.2020.011

Jazyk výsledku

angličtina

Název v původním jazyce

Geometrically realistic macro-scale model for multi-scale simulations of catalytic filters for automotive gas aftertreatment

Popis výsledku v původním jazyce

This paper is part of a research focused on simulating (i) the catalytic conversion of environment endangering gases, and (ii) trapping of the particulate matter in automotive exhaust gas aftertreatment. Historically, the catalytic conversion and the filtration of soot particles were performed in independent devices. However, recent trend is to combine the catalytic converter and soot filter into a single device, the catalytic filter. Compared to the standard two-device system, the catalytic filter is more compact and has lower heat losses. Nevertheless, it is highly sensitive to the catalyst distribution. This study extends our recently developed methodology for pore-scale simulations of flow, diffusion and reaction in the coated catalytic filters. The extension consists of enabling data transfer from macro- to pore-scale models by preparing geometrically realistic macro-scale CFD simulations. The simulation geometry is based on XRT scans of real-life catalytic filters. The flow data from the newly developed macro-scale model are mapped as boundary conditions into the pore-scale simulations and used to improve the estimates of the catalytic filter filtration efficiency.

Název v anglickém jazyce

Geometrically realistic macro-scale model for multi-scale simulations of catalytic filters for automotive gas aftertreatment

Popis výsledku anglicky

This paper is part of a research focused on simulating (i) the catalytic conversion of environment endangering gases, and (ii) trapping of the particulate matter in automotive exhaust gas aftertreatment. Historically, the catalytic conversion and the filtration of soot particles were performed in independent devices. However, recent trend is to combine the catalytic converter and soot filter into a single device, the catalytic filter. Compared to the standard two-device system, the catalytic filter is more compact and has lower heat losses. Nevertheless, it is highly sensitive to the catalyst distribution. This study extends our recently developed methodology for pore-scale simulations of flow, diffusion and reaction in the coated catalytic filters. The extension consists of enabling data transfer from macro- to pore-scale models by preparing geometrically realistic macro-scale CFD simulations. The simulation geometry is based on XRT scans of real-life catalytic filters. The flow data from the newly developed macro-scale model are mapped as boundary conditions into the pore-scale simulations and used to improve the estimates of the catalytic filter filtration efficiency.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20402 - Chemical process engineering

Projekt

GA19-22173S: Mikrostruktura katalytických filtrů pro čištění automobilových výfukových plynů

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings Topical Problems of Fluid Mechanics 2020

ISBN

978-80-87012-74-1

ISSN

2336-5781

e-ISSN

—

Počet stran výsledku

8

Strana od-do

82-89

Název nakladatele

Ústav termomechaniky AV ČR, v.v.i.

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

19. 2. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

000853389000011