Abstract
This article develops the semianalytical analysis of couple stress hybrid nanofluid free stream past a rotating disc by applying the magnetic flux effects and radiation of thermal energy. The analysis of such kind of mixed convective flow is most important due to numerous industrial applications such as electronic devices, atomic reactors, central solar energy equipment, and heat transferring devices. The impact of variable permeability is also considered in the study. The permeability of the disc obeys the Darcy-Forchheimer model. The hybrid nanofluid is composed of water, titanium dioxide, and aluminum oxide. The set of governing equations in the PDE form are transformed to couple ODEs by applying similarity transformations. The ODE set are solved by applying the technique of HAM. The graphs of impacts of numerous physical parameters over momentum, energy, and concentration profiles are drawn in computer-based application Mathematica 11.0.1. In the sundry physical parameters, the porosity parameter, Reynolds number, inertial parameter, Prandtl number, Schmidt number, couple stress, and quotient of rotational momentum to elongating rate are included. During the analysis, it is found that the momentum profile of the couple stress hybrid nanofluid enhances with local inertial parameter, couple stress parameter, porosity parameter, and Reynolds number but declines for the growth in Hartmann number. Heat transfer rate enhances for radiation parameter but decreases in variable for temperature, thermal stratification parameter, thermophoresis parameter, and Brownian parameter.
Highlights
The era in which we are living the use of machinery and modern technology is too much like in civil, mechanical, and engineering
Mahday [21] explored the numerical results about the heat transfer in the mixed convective boundary layer flow over a vertically standing stretched sheet due to variable thermal conductivity and viscosity
The increase in couple stress parameter means the decrease in viscosity of the fluid so it is obvious that nonviscous fluid moves rapidly
Summary
The era in which we are living the use of machinery and modern technology is too much like in civil, mechanical, and engineering. Haidera et al [10] have investigated the stream of hybrid nanofluid across the medium obeying the Darcy-Forchheimer model They solve this flow by the shooting method by keeping the slip condition of momentum as well as applying thermal radiation and stratification. Zubair et al [14] have explored the results of nanofluid flow inside a couple of spinning discs with Cattaneo-Cristove heat flux; the discs are porous following the Darcy-Forchheimer model They analyze the entropy production during the flow of the nanofluid. Mahday [21] explored the numerical results about the heat transfer in the mixed convective boundary layer flow over a vertically standing stretched sheet due to variable thermal conductivity and viscosity. Sadiq et al [46] illustrated impacts of slip conditions (thermal and velocity) over the heat transfer in a nanofluid past a Darcy-Forchheimer porous spinning disc. The rotation of the medium having variable permeability and porosity was encountered
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