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Rapid and efficient mixing in a slip-driven three-dimensional flow in a rectangular channel

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© 2006 The Japan Society of Fluid Mechanics and IOP Publishing Ltd
, , Citation J Rafael Pacheco et al 2006 Fluid Dyn. Res. 38 503 DOI 10.1016/j.fluiddyn.2006.03.003

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Author affiliations

1 Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-6106, USA

2 Chemistry and Biochemistry Department and The Center for Solid State Electronics Research, Arizona State University, P.O. Box 871604, Tempe, AZ 85287-1604, USA

3 Corresponding author

Dates

  1. Received 7 January 2005
  2. Accepted 13 March 2006

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Abstract

A method for generating mixing in an electroosmotic flow of an electrolytic solution in a three-dimensional channel is proposed. When the width-to-height aspect ratio of the channel cross-section is large, mixing of a blob of a solute in a slip-driven three-dimensional flow in a rectangular channel can be used to model and assess the effectiveness of this method. It is demonstrated through numerical simulations that under certain operating conditions, rapid and efficient mixing can be achieved. Future investigation will include the solution of the exact equations and experimentation.

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Communicated by J C Hill

10.1016/j.fluiddyn.2006.03.003