Abstract
Shear rate-pendent viscosity model has been used for the prediction of behaviour regarding shear thinning. Carreau-Yasuda model is one of them which predict shear thinning behaviour. The dynamics of fluid flow models are predicted numerically using shear rate-dependent model associated with Carreau and Yasuda. The two-dimensional heat transfer enhancement via hybrid nano-structures is investigated numerically. The outcomes of pure Carreau-Yasuda and Carreau-Yasuda fluid with nano-structures are compared. The FEM tool is used for numerical simulations and outcomes are recorded in the form of graphs and numerical data. It is observed during numerical experiments that wall shear stress in both types of fluids is proportional to the intensity of the magnetic field. Therefore, the rate of heat transport is decreased when Ohmic dissipations increase the temperature. of fluid. However, this decrease in heat transfer rate is more prominent in hybrid nanofluid relative to the mono nanofluid. The behaviour of generative chemical reactions on the concentration profile is opposite to the behaviour of destructive chemical reactions. It is noted that the motion of fluid has an increasing tendency when the Weissenberg number is increased. This impact of the movement of solid boundary in hybrid nanofluid is faster than the diffusion of wall movement in a mono nanofluid. The Rayleigh convection parameter tends to slow down the motion of molecules of mono nano and hybrid nanofluid. Shear stress increases when the intensity of the magnetic field is increased. This wall shear stress for MHD fluid is greater than that for fluid in absence of a magnetic field. The impact of change of intensity of magnetic field on temperature profiles. It is observed that magnetic force is a retarding force and causes retardation to flow. It means that convective transport of heat energy is compromised when the intensity of the magnetic field is increased.