Computational analysis of hybrid nanoliquid flow over an exponentially elongating sheet influenced by oblique Lorentz force with viscous-Joule dissipation: Role of nanoparticle shape factor

Abstract

This article mainly examines the influences of an oblique Lorentz force on H2O-based hybrid nanoliquid flow over a over a permeable and exponentially elongating surface embedded in a uniform porous medium. The nanoliquid contains Cu and Al2O3 as suspended nanoparticles of varying shapes (spherical, blade and lamina). Further, the significance of viscous-Joule dissipation, nonlinear thermal radiation, and an internal heat source is also considered. Moreover, Navier’s velocity slip and thermal jump conditions are imposed at the surface boundary. Studying such a fluid flow problem becomes essential because of various industrial devices and technological processes, viz., the production of polymer, manufacturing of food products, metallurgical processes, cooling of electronic chips and solar cells, nuclear power reactors and several other devices like thermistors, glass fiber, electric fuses, gas turbines, etc. A suitable similarity transformation has been utilized to transform the governing set of equations into dimensionless form. The resulting highly nonlinear boundary value problem is solved numerically using Runge–Kutta–Fehlberg formula-based shooting method. In addition, secant iteration is employed to modify the guesses for missing initial conditions. The outcomes of the study are demonstrated and displayed through graphs and tables. Furthermore, a quadratic regression analysis is carried out to illustrate the dominant behavior of the relevant factors on the local drag coefficient and Nusselt number. The angle of inclination of applied magnetic field has the tendency to accelerate the flow. Compared to blade and lamina shapes nanoparticles, nanofluid temperature is higher for spherical nanoparticles.