Composite Nanofluids Flow Driven by Electroosmosis Through Squeezing Parallel Plates in Presence of Magnetic Fields

Abstract

Fluid flow across parallel plates has been involved in a variety of commercial and technological applications which have continuously been attracting the interest of the researchers. This chapter presents an approach to investigate electromagnetohydrodynamics (EMHD) squeezing flow of viscous ternary composite nanofluid ( $${\text{Al}}_{2} {\text{O}}_{3}$$ (spherical), silicon dioxide (spherical), and multi-walled carbon nanotube (MWCNT) (cylindrical) with base fluid $${\mathrm{H}}_{2}\mathrm{O}$$ (water)) with zeta potential effects. A set of partial differential equations describing continuity and momentum equations in the mathematical framework is considered. In the present work, the electro-viscous effects caused by electric double-capacity flow field distortions are thoroughly examined over a wide range of applied plate motion intensities. The results of the model vary significantly from those obtained using a normal Poisson–Boltzmann equation model. The governing equations are then transformed into ordinary differential equations using similarity transformation and then numerically solved using MATLAB software. The numerical solutions are employed to explore the scaling phenomena of the liquid, while plates move apart and collide. The influences of numerous parameters on fluid axial velocity and skin friction coefficient have also been explored, including squeezing number, zeta potential parameter, electric field parameter, and electroosmosis parameter. Numerical results conveyed that prominent retardation in flow of ternary hybrid nanofluid is attained due to magnification of electroosmotic parameter at the lower plate.