Complete Chaotic Mixing in an Electro-osmotic Flow by Destabilization of Key Periodic Pathlines

Details Complete Chaotic Mixing in an Electro-osmotic Flow by Destabilization of Key Periodic Pathlines Complete Chaotic Mixing in an Electro-osmotic Flow by Destabilization of Key Periodic Pathlines

2011-02-07

arxiv.org/abs/1102.1448v1

Nonlinear Sciences

Chaotic Dynamics

14 pages, 11 figures

Scientific paper

The ability to generate complete, or almost complete, chaotic mixing is of great interest in numerous applications, particularly for microfluidics. For this purpose, we propose a strategy that allows us to quickly target the parameter values at which complete mixing occurs. The technique is applied to a time periodic, two-dimensional electro-osmotic flow with spatially and temporally varying Helmoltz-Smoluchowski slip boundary conditions. The strategy consists of following the linear stability of some key periodic pathlines in parameter space (i.e., amplitude and frequency of the forcing), particularly through the bifurcation points at which such pathlines become unstable.

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