Experimental investigation of a scaled-up passive curved channel micromixer with slanted grooves

Kristina J. Cook, Ibrahim Hassan

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

Abstract

The flow patterns and concentration distribution in a passive scaled-up micromixer is investigated experimentally over 5 ≤ Re ≤ 100. Four meandering elements serve to enlarge species interface area through the formation of Dean vortices, while 36 slanted grooved structures enhance secondary flow by promoting helical flow. The alternating direction of the curved channel segments and slanted grooves alternated the direction of secondary flow, increasing mixing. Flow visualization provides flow pattern information as seen from the top view, while induced fluorescence provides concentration distribution information at the outlet along the center plane. At low Re (Re = 5), species appear nearly horizontally stacked at the outlet, with a curved interface. As the Reynolds number increases, the angle the species interface makes with the horizontal direction increases due to the increased strength in rotational flow. At higher Re, the formation of Dean vortices is apparent.

Original languageEnglish
Title of host publicationASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011
Pages111-117
Number of pages7
Volume2
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011 - Edmonton, AB, Canada
Duration: 19 Jun 201122 Jun 2011

Other

OtherASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011
CountryCanada
CityEdmonton, AB
Period19/6/1122/6/11

    Fingerprint

ASJC Scopus subject areas

  • Process Chemistry and Technology

Cite this

Cook, K. J., & Hassan, I. (2011). Experimental investigation of a scaled-up passive curved channel micromixer with slanted grooves. In ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, ICNMM 2011 (Vol. 2, pp. 111-117) https://doi.org/10.1115/ICNMM2011-58004