Magnetohydrodynamic flow of hybrid Ag-CuO/H₂O nanofluid past a stretching/shrinking porous plate with viscous-Ohmic dissipation and heat generation/absorption

R. I. Yahaya¹ - N. M. Arifin²

¹ Institute for Mathematical Research, University Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia
² Department of Mathematics, University Putra Malaysia, 43400 UPM Serdang, Selangor Darul Ehsan, Malaysia

Abstract
The idea of hybridising different nanoparticles arises from the attempt to find efficient working fluids with better hydrodynamic and thermophysical properties for heat transfer applications. Rapid studies are carried out to understand the flow and thermal behaviours of the hybrid nanofluid in different flow geometries and conditions. In this paper, a flow of Ag-CuO/H₂O hybrid nanofluid past a porous stretching/shrinking plate in the presence of suction, magnetic field, viscous-Ohmic dissipation, and heat generation/absorption is studied. Governing equations and boundary conditions are transformed into a system of ordinary differential equations using similarity transformations and are computed numerically using the bvp4c solver. The numerical solutions presented in tables and graphs are analysed. The velocity profile for the stretching plate diminishes with the increment of the dimensionless parameters of the magnetic field, suction, local porosity, and nanoparticle volume fraction of Ag, but an opposite situation occurred for the shrinking plate. However, the increase of the heat generation parameter and Eckert number decreases the Nusselt number. The high heat transfer performance of the Ag-CuO/H₂O hybrid nanofluid is disturbed by the presence of heat generation and viscous-Ohmic dissipation in the flow. Tables 4, Figs 17, Refs 36.