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Entropy Analysis on Pulsating Flow of Oldroyd-B Nanofluid in a Vertical Channel with Thermophoresis and Brownian Motion

The magnetohydrodynamic pulsatile Oldroyd-B non-Newtonian nanofluid flow via vertical channel with Joule heating, thermal radiation, and viscous dissipation is investigated in the present study. The influence of thermophoresis and Brownian motion are taken into account. In this investigation, the Buongiorno model is used to analyze the entropy generation. The governing coupled partial differential equations are converted into Ordinary differential equations with the help of the perturbation method and numerically solved by using the Runge-Kutta 4th-order scheme along with the shooting method. The impacts of different emerging parameters for temperature, entropy generation, nanoparticles concentration, Bejan number, heat, and mass transfer rate are examined in detail.