@article{(Open Science Index):https://publications.waset.org/pdf/10009307, title = {Oscillatory Electroosmotic Flow of Power-Law Fluids in a Microchannel}, author = {Rubén Bãnos and José Arcos and Oscar Bautista and Federico Méndez}, country = {}, institution = {}, abstract = {The Oscillatory electroosmotic flow (OEOF) in power law fluids through a microchannel is studied numerically. A time-dependent external electric field (AC) is suddenly imposed at the ends of the microchannel which induces the fluid motion. The continuity and momentum equations in the x and y direction for the flow field were simplified in the limit of the lubrication approximation theory (LAT), and then solved using a numerical scheme. The solution of the electric potential is based on the Debye-H¨uckel approximation which suggest that the surface potential is small,say, smaller than 0.025V and for a symmetric (z : z) electrolyte. Our results suggest that the velocity profiles across the channel-width are controlled by the following dimensionless parameters: the angular Reynolds number, Reω, the electrokinetic parameter, ¯κ, defined as the ratio of the characteristic length scale to the Debye length, the parameter λ which represents the ratio of the Helmholtz-Smoluchowski velocity to the characteristic length scale and the flow behavior index, n. Also, the results reveal that the velocity profiles become more and more non-uniform across the channel-width as the Reω and ¯κ are increased, so oscillatory OEOF can be really useful in micro-fluidic devices such as micro-mixers.}, journal = {International Journal of Mechanical and Mechatronics Engineering}, volume = {12}, number = {8}, year = {2018}, pages = {773 - 776}, ee = {https://publications.waset.org/pdf/10009307}, url = {https://publications.waset.org/vol/140}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 140, 2018}, }