Abstract
This paper investigates the hydro-magnetic ferro-nanofluid flow through rotating converging/diverging channels. Using appropriate transformation, the partial differential equations occurring from mathematical modeling are converted into ordinary differential equations (ODEs). Thereafter, the obtained ODEs with relevant boundary conditions are resolved computationally and analytically with the help of 4th-5th fifth-order Runge-Kutta-Fehlberg method (RKF45) featuring shooting procedure and the Adomian decomposition method separately. The ferro-fluid flow is prepared by dispersing magnetite (Fe3O4) Ferro nanoparticles in H2O conventional liquid. The influence of diverse physical variables of significance like Reynolds quantity, channel half-angle, rotational parameter, fractional size of the nanoparticle, and Hartmann quantity on the progression of ferrofluid rapidity and the skin friction coefficient is considered. It is found that the increase in rotational parameter makes low ferro-fluid rapidity in the higher half of diverging channel which leads to the apparition of flow reversal; however, at the lower half of the channel, the backflow phenomenon is entirely precluded. Also, results obtained for both rotating convergent and divergent channels reveal that the reverse flowing wholly disappeared as the magnitude of the Hartmann number augment.