Thermal Analysis for Mixed Convective Heat Transfer Enhancement in Tangent Hyperbolic Fluid Containing Multi‐Nanoparticles: Optimal Thermal Analysis

ABSTRACT Thermal enhancement is required in many engineering processes, such as thermal and cooling systems, radiators, heat exchangers, and so forth. Therefore, thermal analysis regarding thermal enhancement in shear‐thinning/shear‐thickening fluid past over a heated cone is studied. Nanoparticles significantly enhance the fluid's thermal conductivity. The efficient transfer of heat depends on the thermal conductivity. The formulation of the problem is carried out through conservation laws of fluid dynamics. The coupled and nonlinear problems are solved numerically using bvp4c. Mesh analysis and result validation are carried out. The role of , and on thermal transfer optimization is studied. The presence of Darcy and Forchheimer porous media in the fluids causes a reduction in the Nusselt number, whereas a remarkable increase in the skin friction coefficient. Thus, aerodynamic stability of the flow can be controlled through appropriate values of parameters affecting the skin friction coefficient. In heat exchangers or cooling systems, an increase in skin friction coefficient transitions laminar flow into turbulent flow, which is crucial in enhancing convective heat transfer. The fluids with ternary nanoparticles exert the highest drag on the solid's surface to which they interact. The Lorentz force results in an increase in drag on the flow of the fluid. Therefore, the Lorentz force can be used in controlling the thickness of the momentum boundary layer. The tangent hyperbolic fluids with Joule heating and viscous dissipation characteristics are less efficient working fluids than fluids that do not exhibit Joule heating and viscous effects. Thus, tangent hyperbolic fluids with Joule heating and viscous dissipation are not recommended for optimal thermal transport of heat. In thermal and cooling systems using fluid for the transfer of heat, porous medium affects the efficiency of the working fluid adversely. Moreover, the dispersion of tri‐nanoparticles results in an 8.5003% increase in the Nusselt number.