Abstract
In this study, the effect of Newtonian heating on the boundary layer flow and heat transfer over a stretching surface in a porous medium in the presence of gyrotactic microorganisms and nanoparticle fractions are analysed. The governing equations are reduced to a system of couple non-linear ordinary differential equations, subjected to the Boussinesq approximation and asymmetric heat conditions. The reduced governing ordinary differential equations are then solved numerically. The solutions obtained are graphically represented. The effects of the controlling parameters on the flow, heat, nanoparticle concentration and the density of motile microorganisms have been examined. The results of the present study show the flow velocity, heat and mass transfer and motile microorganism characteristics on the stretching sheet are strongly influenced by the bioconvection parameters and Newtonian.
Highlights
The concept of bioconvection and nanofluid in biological porous media which is the emphasis of current work has many applications in medical engineering and biotechnological systems [1, 2]
To the best of authors’ knowledge, there is not any investigation to address the effect of the Newtonian heating boundary condition on the heat transfer characteristics of bioconvection of nanofluid flow over stretching sheet in a porous medium
The present study aims to examine the effect of the Newtonian heating boundary condition on the heat transfer characteristics of stretching sheet in the presence of nanoparticles and their dynamic effects
Summary
The concept of bioconvection and nanofluid in biological porous media which is the emphasis of current work has many applications in medical engineering and biotechnological systems [1, 2]. Nanofluid is considered as a fluid in which solid nanoparticles with the length scales of 1-100 nm are suspended in conventional heat transfer basic fluid. It has many practical applications in several engineering processes and medical sciences, such heat pipes [3], biofuel cells [4] and biomimetic microsystems [5]. To the best of authors’ knowledge, there is not any investigation to address the effect of the Newtonian heating boundary condition on the heat transfer characteristics of bioconvection of nanofluid flow over stretching sheet in a porous medium. The present study aims to examine the effect of the Newtonian heating boundary condition on the heat transfer characteristics of stretching sheet in the presence of nanoparticles and their dynamic effects
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