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 | Nanotech 2002 Vol. 1
Technical Proceedings of the 2002 International Conference on Modeling and Simulation of Microsystems
Chapter 2: Micro and Nano Fluidic Systems |
| | Simulation of Electrically-Excited Flows in Microchannels for Mixing Application | | Authors: | I. Meisel and P. Ehrhard | | Affilation: | Forschungszentrum Karlsruhe GmbH., GERMANY | | Pages: | 62 - 65 | | Keywords: | electrical double layer, electrohydrodynamics, microchannel, microflow, micromixer, vortex street | | Abstract: | In the present paper we propose a method for improved mixing in microchannels. The basic idea is to excite a secondary vortex flow around an obstacle within the micromixer by applying an external oscillatory electrical field. For a simple setup with a single cylindrical obstacle our numerical (FEM) simulations demonstrate the potential of this method. We find that mixing is improved due to an enlargement of the "interfacial" area between the liquids. Further, a dimensionless quantitative measure for the increase of the "interfacial" area is proposed. |  | View paper | | ISBN: | 0-9708275-7-1 |
| Pages: | 764 |
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