Title: Numerical Simulation of Electroosmotic Flow in Microchannels
Abstract: Aiming at the coupling problems of electrical potential field and flow field in microchannel, the mathematical models of electroosmotic flow were made, and numerical simulation of steady state and transient state based on finite element method was proposed. The influence of electric field, ionic concentration and scales of microchannel to velocity in spatial and time was analyzed. The results show that velocity distribution of microflow is plug-like, microflow rate is proportion to the electrical field strength and zeta potential, while irrelevant with the height of the microchannel. The scale of steady time of microflow is microsecond, and the magnitude is proportion to the square of ratio of height of the microchannel, while irrelevant with the electric field strength and ionic concentration. The results provide the references for the application of electroosmotic driven in microfluidic chips.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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