Effects of Radiation and Magnetic Field on Unsteady Boundary Layer Flow of a Nanofluid Past an Exponentially Stretching Sheet in the Presence of Heat Source/Sink


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Abstract


An analysis has been carried out to investigate an unsteady two-dimensional hydromagnetic nanofluid flow past an exponentially stretching sheet in the presence of thermal radiation and heat generation/absorption. The governing time-dependent partial differential equations are transformed into ordinary differential equations, using an appropriate similarity transformation. The resulting ordinary differential equations are solved numerically using the shooting method. The effects of the governing parameters on the flow and heat transfer characteristics are analyzed and presented graphically. Different types of nanoparticles, namely, Cu, Ag, CuO, Al2O3 and TiO2 with water as the base fluid, are studied. It is found that the flow field and temperature are significantly influenced by the volume fraction of nanoparticles, radiation, heat generation, heat absorption and the magnetic effects. Comparisons with previously published works are performed in some special cases, and found to be in good agreement.
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Keywords


Thermal Radiation; Unsteady Flow; Exponentially Stretching Sheet; Heat Source; Heat Sink; Nanofluid

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References


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