A Numerical Analysis on MHD Hybrid Nanofluid flow and Heat transfer over a Permeable Stretching Sheet under the Influence of Thermal Radiation

Abstract

Abstract The current investigation considers the two-dimensional time independent MHD flow and heat transfer of a water-based hybrid nanofluid induced by a stretching sheet of porous medium with first order boundary slip conditions. The Effects of thermal radiation, viscous dissipation, and Joule heating are taken into consideration. For investigation hybrid nanoparticles of silver (𝐴𝑔) and alumina (𝐴𝑙2𝑂3) are considered along with water (𝐻2𝑂) as base fluid. Following a suitable similarity transformation, the governing equations are reconstructed as a set of non-linear ordinary differential equations. We have employed the Keller-box numerical technique to solve the equations. The influence of different parameters on the velocity profile and temperature profile are illustrated graphically, whereas its impact on skin-friction coefficient and local Nusselt number are tabulated. From this study, we have concluded that the increase in radiation and magnetic parameter increases the thermal boundary layer thickness. Further it is observed that the speed of the hybrid nanofluid can be controlled by applying magnetic field, porous media and enhancing the volume fraction of the nanoparticles. It is found that the use of hybrid nanofluid (𝐴𝑔−𝐴𝑙2𝑂3/𝑤𝑎𝑡𝑒𝑟) shows better results than the nanofluids with single nanoparticles (𝐴𝑔/𝑤𝑎𝑡𝑒𝑟). The current article shows an excellent comparison with previously published works.