English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

This paper explores the mathematical formulations of Fick and Maxwell-Stefandiffusion in the context of polymer electrolyte membrane fuel cell cathode gasdiffusion layers. Formulations of diffusion combined with mass-averaged Darcyflow are considered for three component gases. Fick formulations can beconsidered as approximations of Maxwell-Stefan in a certain sense. For thisapplication, the formulations can be compared computationally in a simple, onedimensional setting. We observe that the predictions of the formulations arevery similar, despite their seemingly different structure. Analytic insight isgiven to the result. In addition, it is seen that for both formulations,diffusion laws are small perturbations from bulk flow. The work is alsointended as a reference to multi-component gas diffusion formulations in thefuel cell setting.

A Comparison of Fick and Maxwell-Stefan Diffusion Formulations in PEMFC Cathode Gas Diffusion Layers