Start with basic theoretical research of electroosmotic flow

with the combination of electrical field and hydrodynamics field

a numerical simulation method of the electroosmotic flow and pressure driven flow inside a 2D model of the microchannel is carefully studied. In our model for simulation

the microchannel is 1000 μm in length and 100 μm in width

a DC power is supplied between the areas from 250 μm to 750 μm to initiate the electroosmotic flow

the physical and chemical properties of the fluid inside the channel and the channel walls are also carefully chosen during the numerical simulation. The flow pattern and velocity field the fluids inside the microchannel is obtained during the numerical simulation. With the careful study of the pressure distribution inside the microchannel

the different flow patterns at the different areas inmicrochannel were explained. This study reveals some new interesting findings for the electroosmotic flow inside the microfluidic devices

and has some potential impact for the design and optimization of the electroosmotic driven microfluidic devices.