ELECTRO-OSMOSIS INDUCED PERISTALTIC FLOW OF EYRING-POWELL NANOFLUID THROUGH A TAPERED ASYMMETRIC CHANNEL WITH THERMAL RADIATION EFFECTS

Abstract

      In the current analysis, the peristaltic transport of an Eyring–Powell nanofluid through a tapered asymmetric channel is explored with particular attention to electro-osmosis and thermal radiation effects. The mathematical model is developed within the framework of the long-wavelength along with low Reynolds number approximations, which allow considerable simplification without losing the essential physics. By employing appropriate non-dimensional variables, the fluid transport problem is reformulated as a coupled system of nonlinear partial differential equations. Analytical expressions for the velocity, temperature, and nanoparticle volume fraction are derived to describe the flow characteristics. The study further highlights the influence of key parameters including electro-osmotic parameter, fluid parameters, local nanoparticle Grashof number, Helmholtz–Smoluchowski velocity, local thermal Grashof number on the velocity profile. The graphical illustrations emphasize the impact of major physical parameters namely Brownian motion parameter, Prandtl number, thermophoresis parameter and thermal radiation parameter on temperature and nanoparticle volume fraction variation. The findings of this study hold significant relevance for biomedical micro devices, where they can facilitate precise regulation of chemical and biological fluids and further contribute to advancements in cancer therapy and targeted drug delivery.