Finite Element Simulation of an Electroosmotic-Driven Flow Division at a T-Junction of Microscale Dimensions
- 28 March 2000
- journal article
- research article
- Published by American Chemical Society (ACS) in Analytical Chemistry
- Vol. 72 (9), 1987-1993
- https://doi.org/10.1021/ac991225z
Abstract
A finite element formulation is developed for the simulation of an electroosmotic flow in rectangular microscale channel networks. The distribution of the flow at a decoupling T-junction is investigated from a hydrodynamic standpoint in the case of a pressure-driven and an electroosmotically driven flow. The calculations are carried out in two steps: first solving the potential distribution arising from the external electric field and from the inherent ζ potential. These distributions are then injected in the Navier Stokes equation for the calculation of the velocity profile. The influence of the various parameters such as the ζ potential distribution, the Reynolds number, and the relative channel widths on the flow distribution is investigated.Keywords
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