Developing a coupled CFD solver for mass, momentum and heat transport in catalytic filters

0560804 - ÚT 2023 CZ eng C - Conference Paper (international conference)
Hlavatý, Tomáš - Isoz, Martin - Kočí, P.
Developing a coupled CFD solver for mass, momentum and heat transport in catalytic filters.
Topical Problems of Fluid Mechanics 2022. Praha: Ústav termomechaniky AV ČR, v. v. i., 2022 - (Šimurda, D.; Bodnár, T.), s. 79-86. ISBN 978-80-87012-77-2. ISSN 2336-5781.
[Topical problems of fluid mechanics 2022. Praha (CZ), 16.02.2022-18.02.2022]
R&D Projects: GA MŠMT(CZ) EF15_003/0000493
Institutional support: RVO:61388998
Keywords : CFD * catalytic filter * OpenFOAM * gasoline particulate filter (GPF)
OECD category: Applied mechanics
http://www2.it.cas.cz/fm2015/im/admin/showfile/data/my/Papers/2022/12-TPFM2022.pdf

Using catalytic filters (CF) in automotive exhaust gas aftertreatment decreases the system heat losses and facilitates the CF regeneration. On the other hand, the CF overall performance is strongly dependent on the catalytic material distribution within it. In the present work, we aim to provide a computational framework to study the dependence of the CF characteristics, i.e. the pressure loss and the conversion of gaseous pollutants, on the catalyst distribution. Previously, we built an isothermal computational fluid dynamics (CFD) model of the flow and conversion of gaseous pollutants inside the CF. However, the reactions occurring inside the CF are exothermic and the assumption of constant temperature proved to be too restricting for real-life applications of the developed isothermal CFD model. Thus, in this work, we extend the framework by the enthalpy balance, which requires combining all the transport equations (mass, momentum and enthalpy) in a single solver. The new and more general solver provides results in good agreement with a well established (1+1)D channel model calibrated on experimental data. Furthermore, it allows studying more complex device-scale geometries of laboratory CF samples.
Permanent Link: https://hdl.handle.net/11104/0334782