Electrohydromagnetic Peristaltic Propulsion of Jeffrey Nanofluid in an Inclined Porous Micro‐Duct With Mixed Convection

Abstract

Electrokinetically powered peristaltic transport has been gaining substantial attention due to its potential applications in the areas of biomedical engineering, smart microfluidic devices, controlled drug delivery, and compact cooling techniques. Motivated by these discoveries, the present study aims to create a theoretical model to analyze the coupled impacts of electrochemical activity and double‐diffusive mixed convection on the peristaltic flow of Jeffrey nanofluid in an inclined non‐uniform asymmetric porous microchannel. The combined effects of thermal radiation, volumetric heat production, Brownian diffusion, thermophoretic transport, and an externally generated angled magnetic field are also included in the analysis. The governing equations are reduced to simplified coupled nonlinear forms by using appropriate nondimensional transformations and lubrication approximations. The equation of electric potential has been solved analytically. Using homotopy perturbation method, approximate analytical solutions have been obtained for the distributions of velocity, temperature, and concentration. The physical behavior of the system has been studied visually in respect of the pressure increase, pressure gradient, streamline structure, thermal field, concentration profile, and transport coefficients such as Nusselt and Sherwood numbers. It is shown that heat and concentration buoyancy effects decrease the fluid velocity near the lower wall, but the electroosmotic force increases the flow toward the top wall significantly. Moreover, the porosity parameter increases the skin friction coefficient at the right wall by 42.89% due to its increase from 0.2 to 0.4. However, the Jeffrey fluid parameter decreases the wall shear stress at the left boundary by 1.31% due to its increase from 0.3 to 0.5. The study further reveals that thermophoretic diffusion and thermal radiation are of significant importance in the temperature features of the Jeffrey nanofluid. Overall, the current results offer significant physical insight for the development of efficient electroactive microscale pumping systems and advanced transport technologies incorporating reactive fluid movement.