Numerical and statistical explorations on the dynamics of water conveying Cu-Al2O3 hybrid nanofluid flow over an exponentially stretchable sheet with Navier's partial slip and thermal jump conditions

Abstract

This research study aims to illustrate the dynamics of water conveying hybrid nanofluid flow over an exponentially stretchable sheet in the presence of Navier's partial slip and thermal jump conditions. The nanoparticles of Cu, TiO2 and Al2O3 are suspended into water (H2O) to prepare three forms of hybrid nanofluids. Also, the influences of Joule dissipation and thermal radiation are considered in the study. The mathematical model embodies the system of highly coupled nonlinear partial differential equations. The set of similarity equations are derived from these partial differential equations by utilizing appropriate similarity variables. Further, these similarity equations together with allied conditions are numerically solved by making use of a finite difference scheme based Lobatto IIIa-bvp4c solver in MATLAB. The significance of emerging dimensionless flow parameters on the water conveying Cu-Al2O3 hybrid nanofluid temperature and velocity are quantified by depicting various graphs. Besides, temperature and velocity profiles are compared for three different water-driven hybrid nanofluids comprising a colloidal mixture of Cu-Al2O3, TiO2-Al2O3 and Cu-TiO2 nanoparticles respectively. The local Nusselt numbers and wall velocity gradients are obtained in numerical form for various emerging physical parameters. Also, to comprehend the linking between heat transfer rate and emergent flow parameters, a statistical method is executed for the investigation of regression (quadratic) approximation on the skin friction coefficients and Nusselt numbers. Finally, the computed numerical results are compared with earlier reported paper and excellent conformity is noticed. The findings infer that the heat transport rate can be improved by the inspirations of suction and thermal radiation while viscous dissipation, magnetic field, injection and thermal slip factor are significant to reduce the heat transport rate of hybrid nanofluid