Modelling annular micromixers

James P. Gleeson, Olivia M. Roche, Jonathan West, Anne Gelb

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

Abstract

Magnetohydrodynamic mixing of two fluids in an annular microchannel is modelled as a two-dimensional, laminar, convection-diffusion problem, and examined using asymptotic analysis and numerical simulation. The time T required for mixing of a plug of solute depends on the Peclét number Pe, and on the geometry of the annulus. Three scaling regimes are identified: purely diffusive, Taylor-dispersive, and convection-dominated; each with a characteristic power-law dependence of T upon Pe. Consequences of these results for optimal micromixer design are discussed.

Original languageEnglish (US)
Title of host publication2003 Nanotechnology Conference and Trade Show - Nanotech 2003
EditorsM. Laudon, B. Romanowicz
Pages206-209
Number of pages4
StatePublished - Dec 1 2003
Event2003 Nanotechnology Conference and Trade Show - Nanotech 2003 - San Francisco, CA, United States
Duration: Feb 23 2003Feb 27 2003

Publication series

Name2003 Nanotechnology Conference and Trade Show - Nanotech 2003
Volume1

Other

Other2003 Nanotechnology Conference and Trade Show - Nanotech 2003
CountryUnited States
CitySan Francisco, CA
Period2/23/032/27/03

Keywords

  • Convection-diffusion
  • Microfluidics
  • Mixing
  • Peclét number
  • Taylor dispersion

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Gleeson, J. P., Roche, O. M., West, J., & Gelb, A. (2003). Modelling annular micromixers. In M. Laudon, & B. Romanowicz (Eds.), 2003 Nanotechnology Conference and Trade Show - Nanotech 2003 (pp. 206-209). (2003 Nanotechnology Conference and Trade Show - Nanotech 2003; Vol. 1).