Hostname: page-component-745bb68f8f-lrblm Total loading time: 0 Render date: 2025-01-27T17:16:21.114Z Has data issue: false hasContentIssue false
  • English
  • Français

Modelling the two-phase flow and current distribution along a vertical gas-evolving electrode

Published online by Cambridge University Press:  13 February 2001

ANDERS A. DAHLKILD
ANDERS A. DAHLKILD
Affiliation:
FaxénLaboratoriet, Kungliga Tekniska Högskolan, SE-100 44 Stockholm, Sweden
Get access Rights & Permissions [Opens in a new window]

Abstract

The bubbly two-phase flow and electric current density distribution along a single, vertical, gas-evolving electrode are modelled and the results of a boundary layer analysis are presented. Existing empirical models for particle transport in sheared and sedimenting suspensions are adopted for the bubble mixture to close the two-phase model. Ionic species concentrations are shown to be essentially homogeneous as the mixing effect of the bubble suspension usually is much larger than dispersion by molecular diffusion even at laminar flow conditions. The non-uniformity of the bubble distribution along the electrode results in a non-uniform current density distribution, which agrees well with existing experimental findings in the literature.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 428 , 10 February 2001 , pp. 249 - 272
Copyright
© 2001 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)