Abstract
In the present article a numerical analysis has been carried out to study the boundary layer flow behavior and heat transfer characteristics of a nanofluid over an exponential stretching sheet. By assuming the stretching sheet to be impermeable, the effect of chemical reaction, thermal radiation, thermopherosis, Brownian motion and suction parameters in the presence of uniform magnetic field on heat and mass transfer are addressed. The governing system of equations is transformed into coupled nonlinear ordinary differential equations using suitable similarity transformations. The transformed equations are then solved numerically using the well known Runge-Kutta-Fehlberg method of fourth-fifth order. A detailed parametric study is performed to access the influence of the physical parameters on longitudinal velocity, temperature and nanoparticle volume fraction profiles as well as the local skin-friction coefficient, local Nusselt number and the local Sherwood number and the results are presented in both graphical and tabular forms.
Highlights
The study of flow and heat transfer over a stretching surface has gained considerable attention due to its vast applications in industry and important bearings on several technological and natural processes
A study of the flow field and heat transfer can be of significant importance since the quality of the final product depends to a large extent on the surface heat transfer rate and the skin friction coefficient
A numerical study corresponding to the flow and heat transfer in a steady flow region of nanofluid over an exponential stretching surface and the effect of chemical reaction, thermal radiation, magnetic and suction parameters are examined and discussed in detail
Summary
The study of flow and heat transfer over a stretching surface has gained considerable attention due to its vast applications in industry and important bearings on several technological and natural processes. Such processes are hot rolling, wire drawing, spinning of filaments, metal extrusion, crystal growing, continuous casting, glass fiber production, paper production, cooling of a large metallic plate in a bath, which may be an electrolyte, etc. The characteristic feature of nanofluids is thermal conductivity enhancement, a phenomenon observed by Masuda et al [2] These fluids are engineered colloidal suspensions of nanoparticles in a base fluid.
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