Original title: Geometrically realistic macro-scale model for multi-scalesimulations of catalytic filters for automotive gasaftertreatment
Authors: Hlavatý, Tomáš ; Isoz, Martin ; Plachá, M. ; Šourek, M. ; Kočí, P.
Document type: Papers
Conference/Event: Topical Problems of Fluid Mechanics 2020, Praha (CZ), 20200219
Year: 2020
Language: eng
Abstract: 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.
Keywords: catalytic filter; CFD; OpenFOAM
Project no.: EF15_003/0000493
Funding provider: GA MŠk
Host item entry: Topical Problems of Fluid Mechanics 2020, ISBN 978-80-87012-74-1, ISSN 2336-5781

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at external website.
External URL: http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2020/11-TPFM2020.pdf
Original record: http://hdl.handle.net/11104/0318589

Permalink: http://www.nusl.cz/ntk/nusl-438284


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Research > Institutes ASCR > Institute of Thermomechanics
Conference materials > Papers
 Record created 2021-03-28, last modified 2021-03-28


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