Numerical Investigation of Electro-osmotic Flow of Fluid in Tapered Microchannel

In this article, a tapered microchannel with ionic fluid is studied under the influence of electric field. Flow is actuated with the application of electric field. The generated flow is governed by Navier–Stokes equation, Poisson–Boltzmann, and Nernst–Planck equation. In COMSOL 5.5, we have selected creeping flow, electrostatic, and transport of diluted species physics to model this flow. This multiphyics model provided numerical solution of modeled problem. In this study, physical performance of all the parameters electro-osmotic parameter, electric field, and Helmholtz–Smoluchowski velocity is evaluated for velocity, pressure change, and volumetric flow.