Relationship between flows and shapes of the liquid-liquid interface in micro counter-current flows

Arata Aota, Akihide Hibara, Yasuhiko Sugii, Takehiko Kitamori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We investigated shapes of the liquid-liquid interface in micro counter-current flows formed in microchannels. The pressure balance at the liquid-liquid interface was evaluated from the shapes of the liquid-liquid interface. Assuming steady laminar flow, the shape should be an arc. However, the shapes consisting of three arcs were observed. Around the center of the microchannel, Laplace pressure (171-450 Pa) was induced toward the aqueous phase. Contrastively, around the both wall sides, Laplace pressure (81-166 Pa) was induced toward the organic phase. This result suggested the mechanism of the loop-like flows reported previously. Furthremore, the opposite flow direction in each phase just around the liquid-liquid interface, namely a possibility of slip, was suggested.

Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007
EditorsJean-Louis Viovy, Patrick Tabeling, Stephanie Descroix, Laurent Malaquin
PublisherChemical and Biological Microsystems Society
Pages871-873
Number of pages3
ISBN (Electronic)9780979806407
Publication statusPublished - 2007
Externally publishedYes
Event11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007 - Paris, France
Duration: 2007 Oct 72007 Oct 11

Publication series

NameProceedings of the 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007

Conference

Conference11th International Conference on Miniaturized Systems for Chemistry and Life Sciences, uTAS 2007
Country/TerritoryFrance
CityParis
Period07/10/707/10/11

Keywords

  • Interfacial tension
  • Liquid-Liquid Interface
  • Multiphase flow
  • Surface modification

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

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