Stability analysis of electrical magneto hydrodynamic stagnation point flow of Ag-Cu/water hybrid nanofluid over a permeable stretching/shrinking slendering sheet: Entropy generation

Abstract

The current study emphasises the stability test of electrical magneto hydrodynamic stagnation point flow of hybrid nanofluids with entropy generation in the existence of velocity and thermal slips over a porous slendering stretchable sheet. A mathematical modelling of [Formula: see text]/water hybrid nanofluid has been explored. Heat transfer proficiency of airplane wings is evaluated with the inclusion of distinguished effects like viscous dissipation and solar-based thermal radiation, so we included them in this article. Using suitable self-similarity transformations, the system of the fluid transport equations are converted into an ordinary differential system, which are determined by utilising the bvp4c in MATLAB software. The achieved outcomes are expressed as the skin friction, Nusselt number, velocity, temperature, Bejan number, entropy generation and streamlines with an influence of diverse physical parameters. The boundary-layer separation happens when the number of results fails to happen ahead of the critical value of the contracting parameter. To show the effect on flow and heat transfer of appropriate parameters, graphs are used. Stability is shown to be better in solution one than in the second, according to the results. The wall thickness variable augmented the velocity profile of the hybrid nanofluid for the first solution and a contrary for the second solution. Higher values of the thermal radiation parameter resulted in enhanced temperatures in the first and second solutions. It is also observed that the rate of heat transfer in the first solution increased as the electric field value increased.