Applied heat transfer modeling in conventional hybrid (Al2O3-CuO)/C2H6O2 and modified-hybrid nanofluids (Al2O3-CuO-Fe3O4)/C2H6O2 between slippery channel by using least square method (LSM)

In this research, a new heat transfer model for ternary nanofluid (Al2O3-CuO-Fe3O4)/C2H6O2 inside slippery converging/diverging channel is reported with innovative effects of dissipation function. This flow situation described by a coupled set of PDEs which reduced to ODEs via similarity and effective ternary nanofluid properties. Then, LSM is successfully coded for the model and achieved the desired results influenced by {document}α ,Re,γ ₁{document} and {document}$ Ec ${document} . It is examined that the fluid movement increases for {document}$ Re ${document} in the physical range of 30–180 and it drops for diverging channel ( {document}α > 0{document} ) when the slippery wall approaches to {document}α = 60ᵒ{document} . The fluid movement is very slow for increasing concentration factor {document}φ ᵢ{document} for {document}i = 1,2,3{document} up to 10%. Further, ternary nanofluid temperature boosts rapidly due to inclusion of trinanoparticles thermal conductivity and dissipation factor ( {document}Ec = 0.1,0.2,0.3,0.4,0.6{document} ) also contributes significantly. Moreover, the temperature is maximum about the center of the channel ( {document}η = 0{document} ) and slip effects ( {document}γ ₁ = 0.1,0.2,0.3,0.4,0.5,0.6{document} ) on the channel walls lead to decrement in the temperature {document}β (η ){document} .