Stagnation-Point Slip Flow of Hybrid Ferrofluid Past Exponentially Stretching Sheet in Darcy-Forchheimer Space

Abstract

Objectives: The present article provides a detailed analysis on the Darcy-Forchheimer hybrid nanofluids flow past an exponentially stretching sheet in the presence of mixed convection with slip conditions and the impacts of different relevant parameters of the fluid flow for velocity and temperature profiles. Methods: In order to create hybrid nanofluids, two magnetic nanoparticles, magnetite ( ) and cobalt ferrite ( ), are taken into consideration. The governing boundary layer coupled partial differential equations are transformed into a system of non-linear ordinary differential equations, which are then solved numerically by using the bvp4c solver available in the Matlab software. A comprehensive parametric analysis has been performed to show the effects of the convective parameter, velocity ratio parameter, porosity parameter, forchheimer parameter, solid volume fractions of and , velocity slip and temperature jump on the fluid velocity and temperature profiles as well as the local skin-friction coefficient and local Nusselt number within the boundary layer. Findings: For higher values of , , , , the velocity field grows, and it declines for , Fr, and A. The temperature field thickness is higher for , Fr, , and A, while decreases for and . The local skin friction coefficient diminishes as rise in the values of , , , Fr, , , A and B. The local Nusselt number shows increasing behaviour for increasing amount of , , , Fr, , , A and B. Novelty: The novelty of the current work is the analysis of the flow of Darcy-Forchheimer hybrid nanofluids across an exponentially stretched sheet in the presence of mixed convection with slip conditions. Here, water is used as base fluid and magnetite, cobalt ferrite being used as hybrid nanoparticles for the present study. Keywords: Hybrid nanofluids, Exponentially stretching sheet, Mixed convection, Velocity slip, Temperature jump