Abstract
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•Fe3O4-Go/water nanoparticles flowing in a moving thin needle is investigated theoretically.•Effects of activation energy, chemical reaction, Hall effect are incorporated.•Comparison of nanofluid and hybrid nanofluid is examined.•Concentration of the hybrid nanoliquid ascends with the rise in the values of activation parameter.•The velocity of the hybrid nanofluid enhances for increased values of Hall parameter.
The consequence of Hall current on hybrid nanofluid flow by incorporating Arrhenius activation energy is examined in this study. The hybrid nanoliquid is formed by dispersing magnetite (Fe3O4) and graphene oxide (Go) nanoparticles in base liquid water (H2O). The framed partial differential equations are converted into ordinary differential equations by applying similarity variables and these reduced equations are numerically solved with the aid of fourth and fifth order Runge-Kutta-Fehlberg (RKF45) method. The impact of several involved dimensionles parameters on velocity, thermal and concentration profiles are incorporated and discussed in detaile by using suitable graphs. It is perceived that, larger values of Hall parameter increases the velocity profile. The rise in values of activation energy parameter accelerates the concentration profile. Further it is noted that drag force and mass transfer rate is decreased for higher solid volume fraction but reverse behaviour is observed in heat transfer rate.