Pulsating flow of electrically conducting couple stress nanofluid in a channel with ohmic dissipation and thermal radiation – Dynamics of blood

Abstract

The present work discloses the magnetohydrodynamic pulsating flow of blood-carrying [Formula: see text] nanoparticles in a channel with the viscous dissipation and Joule heating effects. Couple stress fluid is treated as blood which is the base fluid. The Maxwell Garnett model for thermal conductivity of nanofluid is considered. The thermal radiation and heat source/sink impacts are taken into account. Analytical expressions for dimensionless flow variables are obtained by employing the perturbation method. The impact of active parameters on flow variables is graphically presented. The obtained results show that the velocity of nanofluid increases with an increment in frequency parameter, whereas it decreases for a rise in Hartmann number, nanoparticles volume fraction and couple stress parameter. There is an enhancement in temperature of nanofluid with increasing viscous dissipation, whereas there is a decrease in temperature with an increase in the applied magnetic field. The Nusselt number rises with an enhancement in volume fraction of nanoparticles and Hartmann number at both the walls. Further, the validity of present results is assured by the comparison of analytical and numerical outcomes with an excellent harmony.