MHD nanofluid flow around a permeable stretching sheet with thermal radiation and viscous dissipation

In this research article, we have investigated the unsteady MHD nanofluids flow problem around a permeable linearly stretching sheet under the influence of thermal radiation and viscous dissipation. Transfer of mass and heat analysis is considered for various kinds of nano-particles such as A l 2 O 3 , Cu, Ag and TiO₂. Many research studies had been concluded that thermal conductivity of traditional fluid accelerates 15–40% as nano-particles are mixed in to a base fluid, this theory however depends upon the adding mechanism of the nano-particles. Although it depends upon volume fraction, agglomeration or size of nano-particles etc. But it can be concluded from this study, in a magnetic field environment not only the fluid flow is more consistent than regular fluid but also the rate of heat transfer increases. We have tabulated the results of the four different types of nanofluid and graphically presented the behavior of A l 2 O 3 and Cu nanofluids. These distinct MHD nanofluids are used to explore the parametric features of heat and mass transfer phenomena along a permeable stretching sheet. The impacts of various physical parameters and physical quantities are analyzed. It is observed that from this study that the heat transfers rate of Cu nanofluid is higher than A l 2 O 3 nanofluid. The coupled non-linear equations are solved by semi-analytical technique i.e Differential Transformation Method (DTM) along with Pade-approximation and found to be in well agreement with already reported work in literature. The graphical illustration and tabular results represent the physical importance of the work. It was observed and concluded that the temperature profiles in case of Cu nanofluid presents significantly high as compared with A l 2 O 3 nanofluid. Also, the thicknesses of velocity, thermal and concentration profile decreases by increasing suction/injection and unsteady parameter. These parameters used to control the flow rate.