Electro-osmotic particulate flow of non-Newtonian fluid in a bulged out cavity with lubrication: electro-osmotic dewatering approach

An electro-osmotic particulate flow is presented in this article. Fluid-particle interaction is simulated in bulged out cavity at the center. Casson non-Newtonian fluid model serves as the base liquid, while spherical & homogenous metallic particles are used to form a granular suspension. Particulate flow is modeled by using Navier-Stokes equations which assist to trace the motion of the particles, as well. The electric potential within this volume is governed by The Poisson equation. Moreover, the local charge density may be related to the electric potential through the Boltzmann distribution. In addition to this, lubrication effects are applied to take care of the skin friction of the walls. The main objective of this study is to highlight the application of electro-osmosis, such as biophysics, geomechanics, medicine, microchips, and oil and gas production. Since, electro-osmotic flow arises from the formation of an electrical double layer at solid-liquid interface. Therefore, this is a significant phenomenon in chemical separation techniques; in particular, to expedite the fluid flow in oil rigs and clay-rich soils in petroleum industries. The application of electricity stimulates the fluid to flow out of the pores of the soil, due to the ions with a positive charge.

Automated summary

This article presents an electro-osmotic particulate flow in a bulged out cavity. Casson non-Newtonian fluid model is used as the base liquid, and spherical & homogenous metallic particles form a granular suspension. The motion of the particles is simulated using Navier-Stokes equations. The study highlights the applications of electro-osmosis in various fields.