Beale, Steven B. ; Andersson, Martin ; Weber, Norbert ; Marschall, Holger ; Lehnert, Werner (2020)
Combined Two-phase Co-flow and Counter-flow in a Gas Channel/Porous Transport Layer Assembly.
In: ECS Transactions, 98 (9)
doi: 10.1149/09809.0305ecst
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
This paper considers a detailed numerical analysis of combined liquid-gas co-flow in a gas channel, with liquid-gas counter-flow in a porous transport layer, as is typically found on the cathode side of a polymer electrolyte fuel cell. The geometry is obtained by digital reconstruction of nano-computer tomography images. From this, the domain is tessellated with an unstructured castellated or octree mesh, upon which the equations of mass and momentum are solved by means of a volume of fluid method. Liquid water is produced from an electrode where gaseous oxygen is simultaneously consumed by electrochemical reduction; Liquid-gas counter flow in the porous transport layer results in liquid drops being entrained in co-flow in the gas channels and convected by the gas downstream.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2020 |
| Autor(en): | Beale, Steven B. ; Andersson, Martin ; Weber, Norbert ; Marschall, Holger ; Lehnert, Werner |
| Art des Eintrags: | Bibliographie |
| Titel: | Combined Two-phase Co-flow and Counter-flow in a Gas Channel/Porous Transport Layer Assembly |
| Sprache: | Englisch |
| Publikationsjahr: | September 2020 |
| Verlag: | IOP Publishing |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | ECS Transactions |
| Jahrgang/Volume einer Zeitschrift: | 98 |
| (Heft-)Nummer: | 9 |
| DOI: | 10.1149/09809.0305ecst |
| Kurzbeschreibung (Abstract): | This paper considers a detailed numerical analysis of combined liquid-gas co-flow in a gas channel, with liquid-gas counter-flow in a porous transport layer, as is typically found on the cathode side of a polymer electrolyte fuel cell. The geometry is obtained by digital reconstruction of nano-computer tomography images. From this, the domain is tessellated with an unstructured castellated or octree mesh, upon which the equations of mass and momentum are solved by means of a volume of fluid method. Liquid water is produced from an electrode where gaseous oxygen is simultaneously consumed by electrochemical reduction; Liquid-gas counter flow in the porous transport layer results in liquid drops being entrained in co-flow in the gas channels and convected by the gas downstream. |
| Fachbereich(e)/-gebiet(e): | 04 Fachbereich Mathematik 04 Fachbereich Mathematik > Analysis 04 Fachbereich Mathematik > Analysis > Mathematische Modellierung und Analysis 04 Fachbereich Mathematik > Mathematische Modellierung und Analysis (MMA) |
| Hinterlegungsdatum: | 11 Mär 2022 11:46 |
| Letzte Änderung: | 11 Mär 2022 11:46 |
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