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Liquid-gas flow patterns in a narrow electrochemical channel
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Tillämpad elektrokemi.
KTH, Skolan för kemivetenskap (CHE), Kemiteknik, Tillämpad elektrokemi.ORCID-id: 0000-0001-5816-2924
Vise andre og tillknytning
2011 (engelsk)Inngår i: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 66, nr 10, s. 2252-2260Artikkel i tidsskrift (Fagfellevurdert) 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.

sted, utgiver, år, opplag, sider
2011. Vol. 66, nr 10, s. 2252-2260
Emneord [en]
Bubble, Electrochemistry, Fluid mechanics, Laminar flow, Mathematical modeling, Multiphase flow
HSV kategori
Identifikatorer
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, id: diva2:439515
Tilgjengelig fra: 2011-09-08 Laget: 2011-09-08 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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