Numerical investigation of homogeneous–heterogeneous reactions in 3D MHD non-Newtonian hybrid nanofluid with heat source and shape factor in permeable media over a stretching sheet.

Lisha, N. M.; Vijaya Kumar, A. G.; Shah, Nehad Ali

Carbon nanotubes are very desirable for use in the production of electrochemical appliances due to their attractive properties, which include strong tensile strength, high conductivity of electricity, and chemical, thermal, and mechanical durability. Considering these fascinating properties of carbon nanotubes, we set out to investigate the numerical analysis for the steady 3D magnetic effects of heat and mass transmission on the flow of a Casson (non-Newtonian) hybrid nanofluid consisting of SWCNT and MWCNT combined with water as the base fluid across a permeable stretched sheet. The heat transfer induced by a rotating inclined stretched sheet is analyzed in relation to significant factors such as the rotational parameter, heat generation/absorption, the inclination angle parameter, heat radiation, and homogeneous–heterogeneous reactions. Also, the efficiency of hybrid nanofluid is studied with different shape factors. The physical flow model is then described as a set of partial differential equations that are subsequently transferred into an appropriate system of coupled nonlinear ordinary differential equations using the requisite similarity variables. In order to compute the transformed non-dimensional BVP model, the Runge–Kutta fourth-order methodology is used in conjunction with the shooting procedure. The graphical result shows that raising the heat source parameter and the Biot number increase the temperature profile, which improves the thermal boundary layer. The key characteristics of important flow variables are shown in graphs and tables, and the present findings are compared to prior studies, which show significant agreement. Nusselt number and friction drag analysis are also examined for fluid flow behavior. The results might help increase the performance of thermal engineering engines and equipment in a variety of industrial and thermal systems.

NANOFLUIDS; THERMAL boundary layer; PSEUDOPLASTIC fluids; ORDINARY differential equations; NONLINEAR differential equations; PARTIAL differential equations; HEAT transfer; MEASUREMENT of viscosity; HEAT storage

Journal of Thermal Analysis & Calorimetry, 2024, Vol 149, Issue 13, p6933

1388-6150

Academic Journal

10.1007/s10973-023-12708-x