EO Flow in Parallel Plate Channel

Using the Poisson equation, V (/ = that is, pg = the above equation can be writ- 

In the earlier section, we have assumed constant potential distribution of electric potential inside the electric double layer for the estimation of EO velocity. Let us use the Debye-Hiickel approximation for potential distribution as 

the velocity profile inside the parallel plate geometry is 

The EO flow rate per unit width can be obtained by integrating the velocity profile as 

Similar to equation (6.126), we can write the total flow rate under the combined influence of elecflic field and pressure gradient using 

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