TY  - JOUR
AU  - Beale, Steven B.
AU  - Andersson, Martin
AU  - Weber, Norbert
AU  - Marschall, Holger
AU  - Lehnert, Werner
TI  - Combined Two-phase Co-flow and Counter-flow in a Gas Channel/Porous Transport Layer Assembly
JO  - ECS transactions
VL  - 98
IS  - 9
SN  - 1938-6737
CY  - Pennington, NJ
M1  - FZJ-2021-00879
SP  - 305 - 315
PY  - 2020
AB  - 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.
LB  - PUB:(DE-HGF)16
DO  - DOI:10.1149/09809.0305ecst
UR  - https://juser.fz-juelich.de/record/890299
ER  -