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Liquid-gas flow patterns in a narrow electrochemical channel
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.
KTH, School of Chemical Science and Engineering (CHE), Chemical Engineering and Technology, Applied Electrochemistry.ORCID iD: 0000-0001-5816-2924
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2011 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 66, no 10, 2252-2260 p.Article in journal (Refereed) Published
Abstract [en]

The flow in a narrow (3 mm wide) vertical gap of an electrochemical cell with gas evolution at one electrode is modeled by means of the two-phase Euler-Euler model. The results indicate that at certain conditions an unsteady type of flow with vortices and recirculation regions can occur. Such flow pattern has been observed experimentally, but not reported in previous modeling studies. Further analysis establishes that the presence of a sufficient amount of small (similar to 10 mu m) bubbles is the main factor causing this type of flow at high current densities.

Place, publisher, year, edition, pages
2011. Vol. 66, no 10, 2252-2260 p.
Keyword [en]
Bubble, Electrochemistry, Fluid mechanics, Laminar flow, Mathematical modeling, Multiphase flow
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-39189DOI: 10.1016/j.ces.2011.02.046ISI: 000288937500023Scopus ID: 2-s2.0-79953052811OAI: oai:DiVA.org:kth-39189DiVA: diva2:439515
Available from: 2011-09-08 Created: 2011-09-08 Last updated: 2017-12-08Bibliographically approved

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