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
Article, Bibliographie
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2020 |
| Creators: | Beale, Steven B. ; Andersson, Martin ; Weber, Norbert ; Marschall, Holger ; Lehnert, Werner |
| Type of entry: | Bibliographie |
| Title: | Combined Two-phase Co-flow and Counter-flow in a Gas Channel/Porous Transport Layer Assembly |
| Language: | English |
| Date: | September 2020 |
| Publisher: | IOP Publishing |
| Journal or Publication Title: | ECS Transactions |
| Volume of the journal: | 98 |
| Issue Number: | 9 |
| DOI: | 10.1149/09809.0305ecst |
| 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. |
| Divisions: | 04 Department of Mathematics 04 Department of Mathematics > Analysis 04 Department of Mathematics > Analysis > Mathematical Modeling and Analysis 04 Department of Mathematics > Mathematical Modelling and Analysis |
| Date Deposited: | 11 Mar 2022 11:46 |
| Last Modified: | 11 Mar 2022 11:46 |
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