ANALYTICAL MODELING AND PARAMETRIC CONTROL OF UNSTEADY MHD ELECTRO-OSMOTIC FLOW OF HYBRID JEFFREY NANOFLUIDS IN POROUS MICROCHANNELS

Abstract

This study develops an analytical model for unsteady magnetohydrodynamic (MHD) electro-osmotic flow of a hybrid Jeffrey nanofluid in a porous microchannel, integrating viscous dissipation, Joule heating, thermal radiation, nonlinear heat generation/absorption, and slip/jump boundary conditions. The governing equations are non-dimensionalized and solved using the semi-analytical He–Laplace method. Parametric analysis reveals that electro-osmotic actuation effectively counteracts magnetic damping (Ha), providing precise flow control. The hybrid nanofluid demonstrates superior thermal performance, with a  reduction in maximum temperature compared to the base fluid. Key parameters such as the Jeffrey parameter  suction or injection , Eckert  and radiation parameter  significantly influence flow and thermal behavior. The model offers a predictive framework for designing optimized microfluidic cooling systems.