Numerical Investigation on Pulsating Hydromagnetic Flow of Chemically Reactive Micropolar Nanofluid in a Channel with Brownian Motion, Thermophoresis and Ohmic Heating

This work examines the behavior of pulsating hydromagnetic flow of micropolar nanofluid in a channel with slip effects by employing Buongiorno’s nanofluid model. The effects of Brownian motion, thermophoresis, and Joule heating (Ohmic heating) are taken into account. A perturbation approach is applied to transform the governing partial differential equations (PDEs) into ordinary differential equations (ODEs) and then tackled numerically by adopting the shooting approach via Runge-Kutta fourth-order method. The impacts of velocity, microrotation, temperature, and nanoparticle concentration are depicted graphically with numerous standards of physical parameters. The heat and mass transfer rates are considered and presented through a table. The obtained results reveal that the velocity profiles are diminished by accelerating the Hartmann number and coupling parameter while the velocity is increased by escalating the slip parameter and gyration parameter. The influences of microrotation is increased near to the top wall and diminished near to the bottom wall for intensifying the values of the gyration parameter. The temperature of nanofluid is amplifying with an increment of thermophoresis and Brownian motion parameters while it is diminishing with an enhancement of radiation parameter and magnetic field. Pointedly, the concentration of nanofluid is decreasing with the increase of chemical reaction parameter and thermophoresis parameter. The heat transfer rate is rising due to boosts up the values of the Brownian motion, thermophoresis, and viscous dissipation. Therefore, this analysis is significant in the field of pressure surges, food processing systems, biomedical engineering, cancer therapeutic, and nano-drug delivery in the arteries.