Bioconvection Pumping of Nanofluid Flows in a Curved Conduit with Electromagnetic Fields, Thermal Radiation and Joule Heating

Abstract

This study analyses the electroosmotic transport of Jeffrey nanofluids containing gyrotactic microorganisms in a two-dimensional curved microchannel enduring peristalsis. In the presence of magnetic field, variable properties, viscous dissipation, Ohmic dissipation, thermal radiation, thermophoresis, and Brownian motion in a wave frame of reference in curvilinear coordinates, the formulation of the problem has been made. The governing equations are solved using Mathematica’s software, yielding numerical solutions. Detailed physical reasoning is used to graphically depict the consequences of the dimensionless variables involved. It has been observed that mobile microorganisms improve both the efficiency of heat transfer and the stability of nanoparticles. It is observed that the irreversibility rate decreases as the viscoelastic parameter, Darcy number, and radiation parameter increase. For small values of the curvature parameter, the nanofluid’s axial velocity is not symmetric about the centerline. Increases in the viscous dissipation parameter, Hartmann number, and Joule heating parameter intensify the temperature distribution, while increases in the radiation parameter have the opposite effect. The nanoparticle concentration decreases as thermophoresis advances and increases as the Brownian motion parameter rises. Electroosmotic phenomenon and magnetic parameter increase the rate of heat and mass transfer along the channel walls.